{
"NDC": [
{
"NDCCode": "54871-1090-0",
"PackageDescription": "30 kg in 1 BAG (54871-1090-0)",
"NDC11Code": "54871-1090-00",
"ProductNDC": "54871-1090",
"ProductTypeName": "BULK INGREDIENT",
"NonProprietaryName": "Benazepril Hydrochloride",
"DosageFormName": "POWDER",
"StartMarketingDate": "20021230",
"MarketingCategoryName": "BULK INGREDIENT",
"LabelerName": "Syn-Tech Chem. & Pharm. Co., Ltd.",
"SubstanceName": "BENAZEPRIL HYDROCHLORIDE",
"StrengthNumber": "1",
"StrengthUnit": "kg/kg",
"Status": "Deprecated",
"LastUpdate": "2014-02-04",
"ListingRecordCertifiedThrough": "20171231"
},
{
"NDCCode": "50090-1090-0",
"PackageDescription": "5 mL in 1 BOTTLE, DROPPER (50090-1090-0) ",
"NDC11Code": "50090-1090-00",
"ProductNDC": "50090-1090",
"ProductTypeName": "HUMAN PRESCRIPTION DRUG",
"ProprietaryName": "Ofloxacin Otic",
"NonProprietaryName": "Ofloxacin",
"DosageFormName": "SOLUTION",
"RouteName": "AURICULAR (OTIC)",
"StartMarketingDate": "20040514",
"MarketingCategoryName": "ANDA",
"ApplicationNumber": "ANDA076527",
"LabelerName": "A-S Medication Solutions",
"SubstanceName": "OFLOXACIN",
"StrengthNumber": "3",
"StrengthUnit": "mg/mL",
"Pharm_Classes": "Quinolone Antimicrobial [EPC], Quinolones [CS]",
"Status": "Active",
"LastUpdate": "2024-07-19",
"PackageNdcExcludeFlag": "N",
"ProductNdcExcludeFlag": "N",
"ListingRecordCertifiedThrough": "20261231",
"StartMarketingDatePackage": "20141128",
"SamplePackage": "N",
"IndicationAndUsage": "Ofloxacin otic solution 0.3% is indicated for the treatment of infections caused by susceptible isolates of the designated microorganisms in the specific conditions listed below. Otitis Externa in adults and pediatric patients, 6 months and older, due to Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus. Chronic Suppurative Otitis Media in patients 12 years and older with perforated tympanic membranes due to Proteus mirabilis, Pseudomonas aeruginosa, and Staphylococcus aureus. Acute Otitis Media in pediatric patients one year and older with tympanostomy tubes due to Haemophilus influenzae, Moraxella catarrhalis, Pseudomonas aeruginosa, Staphylococcus aureus,and Streptococcus pneumoniae.",
"Description": "Ofloxacin Otic Solution 0.3% is a sterile aqueous anti-infective (anti-bacterial) solution for otic use. Chemically, ofloxacin has three condensed 6-membered rings made up of a fluorinated carboxy-quinolone with a benzoxazine ring. The chemical name of ofloxacin is: (±)-9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid. The empirical formula of ofloxacin is C18H20FN3O4 and its molecular weight is 361.38. The structural formula is:. Ofloxacin Otic Solution contains 0.3% (3 mg/mL) ofloxacin with benzalkonium chloride (0.0025%), hydrochloric acid, sodium chloride, and water for injection. Additional hydrochloric acid and/or sodium hydroxide may be added to adjust the pH (6.5 ± 0.5)."
},
{
"NDCCode": "70518-1090-0",
"PackageDescription": "30 TABLET, FILM COATED in 1 BLISTER PACK (70518-1090-0) ",
"NDC11Code": "70518-1090-00",
"ProductNDC": "70518-1090",
"ProductTypeName": "HUMAN PRESCRIPTION DRUG",
"ProprietaryName": "Ciprofloxacin",
"NonProprietaryName": "Ciprofloxacin",
"DosageFormName": "TABLET, FILM COATED",
"RouteName": "ORAL",
"StartMarketingDate": "20180402",
"MarketingCategoryName": "ANDA",
"ApplicationNumber": "ANDA075593",
"LabelerName": "REMEDYREPACK INC.",
"SubstanceName": "CIPROFLOXACIN HYDROCHLORIDE",
"StrengthNumber": "250",
"StrengthUnit": "mg/1",
"Pharm_Classes": "Quinolone Antimicrobial [EPC], Quinolones [CS]",
"Status": "Deprecated",
"LastUpdate": "2022-09-15",
"PackageNdcExcludeFlag": "N",
"ProductNdcExcludeFlag": "N",
"ListingRecordCertifiedThrough": "20231231",
"StartMarketingDatePackage": "20180402",
"SamplePackage": "N"
},
{
"NDCCode": "70771-1090-0",
"PackageDescription": "1000 TABLET in 1 BOTTLE (70771-1090-0) ",
"NDC11Code": "70771-1090-00",
"ProductNDC": "70771-1090",
"ProductTypeName": "HUMAN PRESCRIPTION DRUG",
"ProprietaryName": "Nadolol",
"NonProprietaryName": "Nadolol",
"DosageFormName": "TABLET",
"RouteName": "ORAL",
"StartMarketingDate": "20170808",
"MarketingCategoryName": "ANDA",
"ApplicationNumber": "ANDA207761",
"LabelerName": "Zydus Lifesciences Limited",
"SubstanceName": "NADOLOL",
"StrengthNumber": "40",
"StrengthUnit": "mg/1",
"Pharm_Classes": "Adrenergic beta-Antagonists [MoA], beta-Adrenergic Blocker [EPC]",
"Status": "Active",
"LastUpdate": "2024-12-06",
"PackageNdcExcludeFlag": "N",
"ProductNdcExcludeFlag": "N",
"ListingRecordCertifiedThrough": "20271231",
"StartMarketingDatePackage": "20170808",
"SamplePackage": "N"
},
{
"NDCCode": "72162-1090-0",
"PackageDescription": "1000 TABLET in 1 BOTTLE (72162-1090-0) ",
"NDC11Code": "72162-1090-00",
"ProductNDC": "72162-1090",
"ProductTypeName": "HUMAN PRESCRIPTION DRUG",
"ProprietaryName": "Levothyroxine Sodium",
"NonProprietaryName": "Levothyroxine Sodium",
"DosageFormName": "TABLET",
"RouteName": "ORAL",
"StartMarketingDate": "20200803",
"MarketingCategoryName": "NDA AUTHORIZED GENERIC",
"ApplicationNumber": "NDA021342",
"LabelerName": "Bryant Ranch Prepack",
"SubstanceName": "LEVOTHYROXINE SODIUM",
"StrengthNumber": "88",
"StrengthUnit": "ug/1",
"Pharm_Classes": "Thyroxine [CS], l-Thyroxine [EPC]",
"Status": "Active",
"LastUpdate": "2026-04-10",
"PackageNdcExcludeFlag": "N",
"ProductNdcExcludeFlag": "N",
"ListingRecordCertifiedThrough": "20271231",
"StartMarketingDatePackage": "20200803",
"SamplePackage": "N",
"IndicationAndUsage": "Hypothyroidism. Levothyroxine sodium tablets are indicated as a replacement therapy in primary (thyroidal), secondary (pituitary) and tertiary (hypothalamic) congenital or acquired hypothyroidism. Pituitary Thyrotropin (Thyroid-Stimulating Hormone, TSH) Suppression. Levothyroxine sodium tablets are indicated as an adjunct to surgery and radioiodine therapy in the management of thyrotropin-dependent well-differentiated thyroid cancer. Limitations of Use: Levothyroxine sodium tablets are not indicated for suppression of benign thyroid nodules and nontoxic diffuse goiter in iodine-sufficient patients as there are no clinical benefits and overtreatment with levothyroxine sodium tablets may induce hyperthyroidism [see Warnings and Precautions (5.4)]. Levothyroxine sodium tablets are not indicated for treatment of hypothyroidism during the recovery phase of subacute thyroiditis.",
"Description": "Levothyroxine sodium tablets, USP contain synthetic crystalline L-3,3',5,5'- tetraiodothyronine sodium salt [levothyroxine (T4) sodium]. Synthetic T4 is chemically identical to that produced in the human thyroid gland. Levothyroxine (T4) sodium has an empirical formula of C15H10I4NNaO4 xH2O (where x = 5), molecular weight of 798.86 g/mol (anhydrous) and structural formula as shown. Levothyroxine sodium tablets for oral administration are supplied in the following strengths: 25 mcg, 50 mcg, 75 mcg, 88 mcg, 100 mcg, 112 mcg, 125 mcg, 137 mcg, 150 mcg, 175 mcg, 200 mcg and 300 mcg. Each levothyroxine sodium tablet contains the inactive ingredients Magnesium Stearate, NF; Microcrystalline Cellulose, NF; Colloidal Silicone Dioxide, NF; and Sodium Starch Glycolate, NF. Each tablet strength meets USP Dissolution Test 2. Table 6 provides a listing of the color additives by tablet strength. Table 6. Levothyroxine Sodium Tablets Color Additives."
},
{
"NDCCode": "54871-0001-0",
"PackageDescription": "50 kg in 1 DRUM (54871-0001-0) ",
"NDC11Code": "54871-0001-00",
"ProductNDC": "54871-0001",
"ProductTypeName": "BULK INGREDIENT",
"NonProprietaryName": "Chlorzoxazone",
"DosageFormName": "POWDER",
"StartMarketingDate": "19831107",
"MarketingCategoryName": "BULK INGREDIENT",
"LabelerName": "Syn-Tech Chem. & Pharm. Co., Ltd.",
"SubstanceName": "CHLORZOXAZONE",
"StrengthNumber": "1",
"StrengthUnit": "kg/kg",
"Status": "Unfinished",
"LastUpdate": "2025-12-18",
"ListingRecordCertifiedThrough": "20261231",
"StartMarketingDatePackage": "07-NOV-83"
},
{
"NDCCode": "54871-0092-0",
"PackageDescription": "25 kg in 1 DRUM (54871-0092-0) ",
"NDC11Code": "54871-0092-00",
"ProductNDC": "54871-0092",
"ProductTypeName": "BULK INGREDIENT",
"NonProprietaryName": "Phenylephrine Hydrochloride",
"DosageFormName": "POWDER",
"StartMarketingDate": "20030410",
"MarketingCategoryName": "BULK INGREDIENT",
"LabelerName": "Syn-Tech Chem. & Pharm. Co., Ltd.",
"SubstanceName": "PHENYLEPHRINE HYDROCHLORIDE",
"StrengthNumber": "1",
"StrengthUnit": "kg/kg",
"Status": "Unfinished",
"LastUpdate": "2025-12-18",
"ListingRecordCertifiedThrough": "20261231",
"StartMarketingDatePackage": "10-APR-03"
},
{
"NDCCode": "54871-0101-0",
"PackageDescription": "25 kg in 1 DRUM (54871-0101-0) ",
"NDC11Code": "54871-0101-00",
"ProductNDC": "54871-0101",
"ProductTypeName": "BULK INGREDIENT",
"NonProprietaryName": "Pramoxine Hydrochloride",
"DosageFormName": "POWDER",
"StartMarketingDate": "19871104",
"MarketingCategoryName": "BULK INGREDIENT",
"LabelerName": "Syn-Tech Chem. & Pharm. Co., Ltd.",
"SubstanceName": "PRAMOXINE HYDROCHLORIDE",
"StrengthNumber": "1",
"StrengthUnit": "kg/kg",
"Status": "Unfinished",
"LastUpdate": "2025-12-18",
"ListingRecordCertifiedThrough": "20261231",
"StartMarketingDatePackage": "04-NOV-87"
},
{
"NDCCode": "54871-0801-0",
"PackageDescription": "25 kg in 1 DRUM (54871-0801-0)",
"NDC11Code": "54871-0801-00",
"ProductNDC": "54871-0801",
"ProductTypeName": "BULK INGREDIENT",
"NonProprietaryName": "Metoprolol Succinate",
"DosageFormName": "POWDER",
"StartMarketingDate": "20070730",
"MarketingCategoryName": "BULK INGREDIENT",
"LabelerName": "Syn-Tech Chem. & Pharm. Co., Ltd.",
"SubstanceName": "METOPROLOL SUCCINATE",
"StrengthNumber": "1",
"StrengthUnit": "kg/kg",
"Status": "Deprecated",
"LastUpdate": "2014-02-04",
"ListingRecordCertifiedThrough": "20171231"
},
{
"NDCCode": "54871-1084-0",
"PackageDescription": "50 kg in 1 DRUM (54871-1084-0) ",
"NDC11Code": "54871-1084-00",
"ProductNDC": "54871-1084",
"ProductTypeName": "BULK INGREDIENT",
"NonProprietaryName": "Diclofenac Sodium",
"DosageFormName": "POWDER",
"StartMarketingDate": "19831107",
"MarketingCategoryName": "BULK INGREDIENT",
"LabelerName": "Syn-Tech Chem. & Pharm. Co., Ltd.",
"SubstanceName": "DICLOFENAC SODIUM",
"StrengthNumber": "1",
"StrengthUnit": "kg/kg",
"Status": "Unfinished",
"LastUpdate": "2025-12-18",
"ListingRecordCertifiedThrough": "20261231",
"StartMarketingDatePackage": "07-NOV-83"
},
{
"NDCCode": "54871-1087-0",
"PackageDescription": "25 kg in 1 DRUM (54871-1087-0) ",
"NDC11Code": "54871-1087-00",
"ProductNDC": "54871-1087",
"ProductTypeName": "BULK INGREDIENT",
"NonProprietaryName": "Metaxalone",
"DosageFormName": "POWDER",
"StartMarketingDate": "20040202",
"MarketingCategoryName": "BULK INGREDIENT",
"LabelerName": "Syn-Tech Chem. & Pharm. Co., Ltd.",
"SubstanceName": "METAXALONE",
"StrengthNumber": "1",
"StrengthUnit": "kg/kg",
"Status": "Unfinished",
"LastUpdate": "2025-12-18",
"ListingRecordCertifiedThrough": "20261231",
"StartMarketingDatePackage": "02-FEB-04"
},
{
"NDCCode": "54871-1088-0",
"PackageDescription": "25 kg in 1 DRUM (54871-1088-0) ",
"NDC11Code": "54871-1088-00",
"ProductNDC": "54871-1088",
"ProductTypeName": "BULK INGREDIENT",
"NonProprietaryName": "Timolol Maleate",
"DosageFormName": "POWDER",
"StartMarketingDate": "20110211",
"MarketingCategoryName": "BULK INGREDIENT",
"LabelerName": "Syn-Tech Chem. & Pharm. Co., Ltd.",
"SubstanceName": "TIMOLOL MALEATE",
"StrengthNumber": "1",
"StrengthUnit": "kg/kg",
"Status": "Unfinished",
"LastUpdate": "2025-12-18",
"ListingRecordCertifiedThrough": "20261231",
"StartMarketingDatePackage": "11-FEB-11"
},
{
"NDCCode": "54871-1089-0",
"PackageDescription": "25 kg in 1 DRUM (54871-1089-0)",
"NDC11Code": "54871-1089-00",
"ProductNDC": "54871-1089",
"ProductTypeName": "BULK INGREDIENT",
"NonProprietaryName": "Atenolol",
"DosageFormName": "POWDER",
"StartMarketingDate": "19930712",
"MarketingCategoryName": "BULK INGREDIENT",
"LabelerName": "Syn-Tech Chem. & Pharm. Co., Ltd.",
"SubstanceName": "ATENOLOL",
"StrengthNumber": "1",
"StrengthUnit": "kg/kg",
"Status": "Deprecated",
"LastUpdate": "2014-02-04",
"ListingRecordCertifiedThrough": "20171231"
},
{
"NDCCode": "54871-1091-0",
"PackageDescription": "10 kg in 1 DRUM (54871-1091-0) ",
"NDC11Code": "54871-1091-00",
"ProductNDC": "54871-1091",
"ProductTypeName": "BULK INGREDIENT",
"NonProprietaryName": "Granisetron",
"DosageFormName": "POWDER",
"StartMarketingDate": "20120725",
"MarketingCategoryName": "BULK INGREDIENT",
"LabelerName": "Syn-Tech Chem. & Pharm. Co., Ltd.",
"SubstanceName": "GRANISETRON",
"StrengthNumber": "1",
"StrengthUnit": "kg/kg",
"Status": "Unfinished",
"LastUpdate": "2025-12-18",
"ListingRecordCertifiedThrough": "20261231",
"StartMarketingDatePackage": "25-JUL-12"
},
{
"NDCCode": "54871-1092-0",
"PackageDescription": "20 kg in 1 BOTTLE (54871-1092-0) ",
"NDC11Code": "54871-1092-00",
"ProductNDC": "54871-1092",
"ProductTypeName": "BULK INGREDIENT",
"NonProprietaryName": "Crotamiton",
"DosageFormName": "LIQUID",
"StartMarketingDate": "19931204",
"MarketingCategoryName": "BULK INGREDIENT",
"LabelerName": "Syn-Tech Chem. & Pharm. Co., Ltd.",
"SubstanceName": "CROTAMITON",
"StrengthNumber": "1",
"StrengthUnit": "kg/kg",
"Status": "Unfinished",
"LastUpdate": "2025-12-18",
"ListingRecordCertifiedThrough": "20261231",
"StartMarketingDatePackage": "04-DEC-93"
},
{
"NDCCode": "54871-1093-0",
"PackageDescription": "25 kg in 1 DRUM (54871-1093-0) ",
"NDC11Code": "54871-1093-00",
"ProductNDC": "54871-1093",
"ProductTypeName": "BULK INGREDIENT",
"NonProprietaryName": "Diclofenac Epolamine",
"DosageFormName": "POWDER",
"StartMarketingDate": "20130207",
"MarketingCategoryName": "BULK INGREDIENT",
"LabelerName": "Syn-Tech Chem. & Pharm. Co., Ltd.",
"SubstanceName": "DICLOFENAC EPOLAMINE",
"StrengthNumber": "1",
"StrengthUnit": "kg/kg",
"Status": "Unfinished",
"LastUpdate": "2025-12-18",
"ListingRecordCertifiedThrough": "20261231",
"StartMarketingDatePackage": "07-FEB-13"
},
{
"NDCCode": "54871-1094-0",
"PackageDescription": "1 kg in 1 BAG (54871-1094-0) ",
"NDC11Code": "54871-1094-00",
"ProductNDC": "54871-1094",
"ProductTypeName": "BULK INGREDIENT",
"NonProprietaryName": "Xylazine Hydrochloride",
"DosageFormName": "POWDER",
"StartMarketingDate": "20230626",
"MarketingCategoryName": "BULK INGREDIENT",
"LabelerName": "Syn-Tech Chem. & Pharm. Co., Ltd.",
"SubstanceName": "XYLAZINE HYDROCHLORIDE",
"StrengthNumber": "1",
"StrengthUnit": "kg/kg",
"Status": "Unfinished",
"LastUpdate": "2025-01-09",
"ListingRecordCertifiedThrough": "20261231",
"StartMarketingDatePackage": "26-JUN-23"
},
{
"NDCCode": "54871-1095-0",
"PackageDescription": "500 g in 1 BAG (54871-1095-0)",
"NDC11Code": "54871-1095-00",
"ProductNDC": "54871-1095",
"ProductTypeName": "BULK INGREDIENT",
"NonProprietaryName": "Epinephrine Base",
"DosageFormName": "POWDER",
"StartMarketingDate": "20160609",
"MarketingCategoryName": "BULK INGREDIENT",
"LabelerName": "Syn-Tech Chem. & Pharm. Co. LTD.",
"SubstanceName": "EPINEPHRINE",
"StrengthNumber": "1",
"StrengthUnit": "g/g",
"Status": "Unfinished",
"LastUpdate": "2017-12-20",
"ListingRecordCertifiedThrough": "20171231"
},
{
"NDCCode": "54871-1096-0",
"PackageDescription": "500 g in 1 BAG (54871-1096-0)",
"NDC11Code": "54871-1096-00",
"ProductNDC": "54871-1096",
"ProductTypeName": "BULK INGREDIENT",
"NonProprietaryName": "Epinephrine Bitartrate",
"DosageFormName": "POWDER",
"StartMarketingDate": "20160609",
"MarketingCategoryName": "BULK INGREDIENT",
"LabelerName": "Syn-Tech Chem. & Pharm. Co. LTD.",
"SubstanceName": "EPINEPHRINE BITARTRATE",
"StrengthNumber": "1",
"StrengthUnit": "g/g",
"Status": "Unfinished",
"LastUpdate": "2017-12-20",
"ListingRecordCertifiedThrough": "20171231"
},
{
"NDCCode": "54871-1097-0",
"PackageDescription": "1 kg in 1 BOTTLE (54871-1097-0)",
"NDC11Code": "54871-1097-00",
"ProductNDC": "54871-1097",
"ProductTypeName": "BULK INGREDIENT",
"NonProprietaryName": "Epinephrine Bitartrate",
"DosageFormName": "POWDER",
"StartMarketingDate": "20160609",
"MarketingCategoryName": "BULK INGREDIENT",
"LabelerName": "Syn-Tech Chem. & Pharm. Co. LTD.",
"SubstanceName": "EPINEPHRINE BITARTRATE",
"StrengthNumber": "1",
"StrengthUnit": "kg/kg",
"Status": "Unfinished",
"LastUpdate": "2018-04-13",
"ListingRecordCertifiedThrough": "20191231"
},
{
"NDCCode": "54871-1098-0",
"PackageDescription": "10 kg in 1 DRUM (54871-1098-0) ",
"NDC11Code": "54871-1098-00",
"ProductNDC": "54871-1098",
"ProductTypeName": "BULK INGREDIENT",
"NonProprietaryName": "Riluzole",
"DosageFormName": "POWDER",
"StartMarketingDate": "20240101",
"MarketingCategoryName": "BULK INGREDIENT",
"LabelerName": "Syn-Tech Chem. & Pharm. Co., Ltd.",
"SubstanceName": "RILUZOLE",
"StrengthNumber": "1",
"StrengthUnit": "kg/kg",
"Status": "Unfinished",
"LastUpdate": "2025-12-18",
"ListingRecordCertifiedThrough": "20261231",
"StartMarketingDatePackage": "01-JAN-24"
},
{
"NDCCode": "54871-1099-0",
"PackageDescription": "1 g in 1 BAG (54871-1099-0) ",
"NDC11Code": "54871-1099-00",
"ProductNDC": "54871-1099",
"ProductTypeName": "BULK INGREDIENT",
"NonProprietaryName": "Xylazine Hydrochloride",
"DosageFormName": "POWDER",
"StartMarketingDate": "20250106",
"MarketingCategoryName": "BULK INGREDIENT",
"LabelerName": "Syn-Tech Chem. & Pharm. Co., Ltd.",
"SubstanceName": "XYLAZINE HYDROCHLORIDE",
"StrengthNumber": "1",
"StrengthUnit": "g/g",
"Status": "Unfinished",
"LastUpdate": "2025-01-09",
"ListingRecordCertifiedThrough": "20261231",
"StartMarketingDatePackage": "06-JAN-25"
},
{
"NDCCode": "0074-4456-04",
"PackageDescription": "250 mL in 1 BOTTLE, PLASTIC (0074-4456-04) ",
"NDC11Code": "00074-4456-04",
"ProductNDC": "0074-4456",
"ProductTypeName": "HUMAN PRESCRIPTION DRUG",
"ProprietaryName": "Ultane",
"NonProprietaryName": "Sevoflurane",
"DosageFormName": "LIQUID",
"RouteName": "RESPIRATORY (INHALATION)",
"StartMarketingDate": "19950607",
"MarketingCategoryName": "NDA",
"ApplicationNumber": "NDA020478",
"LabelerName": "AbbVie Inc.",
"SubstanceName": "SEVOFLURANE",
"StrengthNumber": "250",
"StrengthUnit": "mL/250mL",
"Pharm_Classes": "General Anesthesia [PE], General Anesthetic [EPC]",
"Status": "Active",
"LastUpdate": "2025-02-14",
"PackageNdcExcludeFlag": "N",
"ProductNdcExcludeFlag": "N",
"ListingRecordCertifiedThrough": "20261231",
"StartMarketingDatePackage": "19950607",
"SamplePackage": "N",
"IndicationAndUsage": "ULTANE is indicated for induction and maintenance of general anesthesia in adult and pediatric patients for inpatient and outpatient surgery. ULTANE should be administered only by persons trained in the administration of general anesthesia. Facilities for maintenance of a patent airway, artificial ventilation, oxygen enrichment, and circulatory resuscitation must be immediately available. Since level of anesthesia may be altered rapidly, only vaporizers producing predictable concentrations of sevoflurane should be used.",
"Description": "ULTANE (sevoflurane), volatile liquid for inhalation, a nonflammable and nonexplosive liquid administered by vaporization, is a halogenated general inhalation anesthetic drug. Sevoflurane is fluoromethyl 2,2,2,-trifluoro-1-(trifluoromethyl) ethyl ether and its structural formula is:. Sevoflurane is nonflammable and nonexplosive as defined by the requirements of International Electrotechnical Commission 601-2-13. Sevoflurane is a clear, colorless, liquid containing no additives. Sevoflurane is not corrosive to stainless steel, brass, aluminum, nickel-plated brass, chrome-plated brass or copper beryllium. Sevoflurane is nonpungent. It is miscible with ethanol, ether, chloroform, and benzene, and it is slightly soluble in water. Sevoflurane is stable when stored under normal room lighting conditions according to instructions. No discernible degradation of sevoflurane occurs in the presence of strong acids or heat. When in contact with alkaline CO2 absorbents (e.g., Baralyme® and to a lesser extent soda lime) within the anesthesia machine, sevoflurane can undergo degradation under certain conditions. Degradation of sevoflurane is minimal, and degradants are either undetectable or present in non-toxic amounts when used as directed with fresh absorbents. Sevoflurane degradation and subsequent degradant formation are enhanced by increasing absorbent temperature increased sevoflurane concentration, decreased fresh gas flow and desiccated CO2 absorbents (especially with potassium hydroxide containing absorbents e.g., Baralyme). Sevoflurane alkaline degradation occurs by two pathways. The first results from the loss of hydrogen fluoride with the formation of pentafluoroisopropenyl fluoromethyl ether, (PIFE, C4H2F6O), also known as Compound A, and trace amounts of pentafluoromethoxy isopropyl fluoromethyl ether, (PMFE, C5H6F6O), also known as Compound B. The second pathway for degradation of sevoflurane, which occurs primarily in the presence of desiccated CO2 absorbents, is discussed later. In the first pathway, the defluorination pathway, the production of degradants in the anesthesia circuit results from the extraction of the acidic proton in the presence of a strong base (KOH and/or NaOH) forming an alkene (Compound A) from sevoflurane similar to formation of 2-bromo-2-chloro-1,1-difluoro ethylene (BCDFE) from halothane. Laboratory simulations have shown that the concentration of these degradants is inversely correlated with the fresh gas flow rate (See Figure 1). Since the reaction of carbon dioxide with absorbents is exothermic, the temperature increase will be determined by quantities of CO2 absorbed, which in turn will depend on fresh gas flow in the anesthesia circle system, metabolic status of the patient, and ventilation. The relationship of temperature produced by varying levels of CO2 and Compound A production is illustrated in the following in vitro simulation where CO2 was added to a circle absorber system. Compound A concentration in a circle absorber system increases as a function of increasing CO2 absorbent temperature and composition (Baralyme producing higher levels than soda lime), increased body temperature, and increased minute ventilation, and decreasing fresh gas flow rates. It has been reported that the concentration of Compound A increases significantly with prolonged dehydration of Baralyme. Compound A exposure in patients also has been shown to rise with increased sevoflurane concentrations and duration of anesthesia. In a clinical study in which sevoflurane was administered to patients under low flow conditions for ≥ 2 hours at flow rates of 1 Liter/minute, Compound A levels were measured in an effort to determine the relationship between MAC hours and Compound A levels produced. The relationship between Compound A levels and sevoflurane exposure are shown in Figure 2a. Compound A has been shown to be nephrotoxic in rats after exposures that have varied in duration from one to three hours. No histopathologic change was seen at a concentration of up to 270 ppm for one hour. Sporadic single cell necrosis of proximal tubule cells has been reported at a concentration of 114 ppm after a 3-hour exposure to Compound A in rats. The LC50 reported at 1 hour is 1050-1090 ppm (male-female) and, at 3 hours, 350-490 ppm (male-female). An experiment was performed comparing sevoflurane plus 75 or 100 ppm Compound A with an active control to evaluate the potential nephrotoxicity of Compound A in non-human primates. A single 8-hour exposure of Sevoflurane in the presence of Compound A produced single-cell renal tubular degeneration and single-cell necrosis in cynomolgus monkeys. These changes are consistent with the increased urinary protein, glucose level and enzymic activity noted on days one and three on the clinical pathology evaluation. This nephrotoxicity produced by Compound A is dose and duration of exposure dependent. At a fresh gas flow rate of 1 L/min, mean maximum concentrations of Compound A in the anesthesia circuit in clinical settings are approximately 20 ppm (0.002%) with soda lime and 30 ppm (0.003%) with Baralyme in adult patients; mean maximum concentrations in pediatric patients with soda lime are about half those found in adults. The highest concentration observed in a single patient with Baralyme was 61 ppm (0.0061%) and 32 ppm (0.0032%) with soda lime. The levels of Compound A at which toxicity occurs in humans is not known. The second pathway for degradation of sevoflurane occurs primarily in the presence of desiccated CO2 absorbents and leads to the dissociation of sevoflurane into hexafluoroisopropanol (HFIP) and formaldehyde. HFIP is inactive, non-genotoxic, rapidly glucuronidated and cleared by the liver. Formaldehyde is present during normal metabolic processes. Upon exposure to a highly desiccated absorbent, formaldehyde can further degrade into methanol and formate. Formate can contribute to the formation of carbon monoxide in the presence of high temperature that can be associated with desiccated Baralyme®. Methanol can react with Compound A to form the methoxy addition product Compound B. Compound B can undergo further HF elimination to form Compounds C, D, and E. Sevoflurane degradants were observed in the respiratory circuit of an experimental anesthesia machine using desiccated CO2 absorbents and maximum sevoflurane concentrations (8%) for extended periods of time (> 2 hours). Concentrations of formaldehyde observed with desiccated soda lime in this experimental anesthesia respiratory circuit were consistent with levels that could potentially result in respiratory irritation. Although KOH containing CO2 absorbents are no longer commercially available, in the laboratory experiments, exposure of sevoflurane to the desiccated KOH containing CO2 absorbent, Baralyme, resulted in the detection of substantially greater degradant levels."
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"Description": "ULTANE (sevoflurane), volatile liquid for inhalation, a nonflammable and nonexplosive liquid administered by vaporization, is a halogenated general inhalation anesthetic drug. Sevoflurane is fluoromethyl 2,2,2,-trifluoro-1-(trifluoromethyl) ethyl ether and its structural formula is:. Sevoflurane is nonflammable and nonexplosive as defined by the requirements of International Electrotechnical Commission 601-2-13. Sevoflurane is a clear, colorless, liquid containing no additives. Sevoflurane is not corrosive to stainless steel, brass, aluminum, nickel-plated brass, chrome-plated brass or copper beryllium. Sevoflurane is nonpungent. It is miscible with ethanol, ether, chloroform, and benzene, and it is slightly soluble in water. Sevoflurane is stable when stored under normal room lighting conditions according to instructions. No discernible degradation of sevoflurane occurs in the presence of strong acids or heat. When in contact with alkaline CO2 absorbents (e.g., Baralyme® and to a lesser extent soda lime) within the anesthesia machine, sevoflurane can undergo degradation under certain conditions. Degradation of sevoflurane is minimal, and degradants are either undetectable or present in non-toxic amounts when used as directed with fresh absorbents. Sevoflurane degradation and subsequent degradant formation are enhanced by increasing absorbent temperature increased sevoflurane concentration, decreased fresh gas flow and desiccated CO2 absorbents (especially with potassium hydroxide containing absorbents e.g., Baralyme). Sevoflurane alkaline degradation occurs by two pathways. The first results from the loss of hydrogen fluoride with the formation of pentafluoroisopropenyl fluoromethyl ether, (PIFE, C4H2F6O), also known as Compound A, and trace amounts of pentafluoromethoxy isopropyl fluoromethyl ether, (PMFE, C5H6F6O), also known as Compound B. The second pathway for degradation of sevoflurane, which occurs primarily in the presence of desiccated CO2 absorbents, is discussed later. In the first pathway, the defluorination pathway, the production of degradants in the anesthesia circuit results from the extraction of the acidic proton in the presence of a strong base (KOH and/or NaOH) forming an alkene (Compound A) from sevoflurane similar to formation of 2-bromo-2-chloro-1,1-difluoro ethylene (BCDFE) from halothane. Laboratory simulations have shown that the concentration of these degradants is inversely correlated with the fresh gas flow rate (See Figure 1). Figure 1. Fresh Gas Flow Rate versus Compound A Levels in a Circle Absorber System. Since the reaction of carbon dioxide with absorbents is exothermic, the temperature increase will be determined by quantities of CO2 absorbed, which in turn will depend on fresh gas flow in the anesthesia circle system, metabolic status of the patient, and ventilation. The relationship of temperature produced by varying levels of CO2 and Compound A production is illustrated in the following in vitro simulation where CO2 was added to a circle absorber system. Figure 2. Carbon Dioxide Flow versus Compound A and Maximum Temperature. Compound A concentration in a circle absorber system increases as a function of increasing CO2 absorbent temperature and composition (Baralyme producing higher levels than soda lime), increased body temperature, and increased minute ventilation, and decreasing fresh gas flow rates. It has been reported that the concentration of Compound A increases significantly with prolonged dehydration of Baralyme. Compound A exposure in patients also has been shown to rise with increased sevoflurane concentrations and duration of anesthesia. In a clinical study in which sevoflurane was administered to patients under low flow conditions for ≥ 2 hours at flow rates of 1 Liter/minute, Compound A levels were measured in an effort to determine the relationship between MAC hours and Compound A levels produced. The relationship between Compound A levels and sevoflurane exposure are shown in Figure 2a. Figure 2a. ppm·hr versus MAC·hr at Flow Rate of 1 L/min. Compound A has been shown to be nephrotoxic in rats after exposures that have varied in duration from one to three hours. No histopathologic change was seen at a concentration of up to 270 ppm for one hour. Sporadic single cell necrosis of proximal tubule cells has been reported at a concentration of 114 ppm after a 3-hour exposure to Compound A in rats. The LC50 reported at 1 hour is 1050-1090 ppm (male-female) and, at 3 hours, 350-490 ppm (male-female). An experiment was performed comparing sevoflurane plus 75 or 100 ppm Compound A with an active control to evaluate the potential nephrotoxicity of Compound A in non-human primates. A single 8-hour exposure of Sevoflurane in the presence of Compound A produced single-cell renal tubular degeneration and single-cell necrosis in cynomolgus monkeys. These changes are consistent with the increased urinary protein, glucose level and enzymic activity noted on days one and three on the clinical pathology evaluation. This nephrotoxicity produced by Compound A is dose and duration of exposure dependent. At a fresh gas flow rate of 1 L/min, mean maximum concentrations of Compound A in the anesthesia circuit in clinical settings are approximately 20 ppm (0.002%) with soda lime and 30 ppm (0.003%) with Baralyme in adult patients; mean maximum concentrations in pediatric patients with soda lime are about half those found in adults. The highest concentration observed in a single patient with Baralyme was 61 ppm (0.0061%) and 32 ppm (0.0032%) with soda lime. The levels of Compound A at which toxicity occurs in humans is not known. The second pathway for degradation of sevoflurane occurs primarily in the presence of desiccated CO2 absorbents and leads to the dissociation of sevoflurane into hexafluoroisopropanol (HFIP) and formaldehyde. HFIP is inactive, non-genotoxic, rapidly glucuronidated and cleared by the liver. Formaldehyde is present during normal metabolic processes. Upon exposure to a highly desiccated absorbent, formaldehyde can further degrade into methanol and formate. Formate can contribute to the formation of carbon monoxide in the presence of high temperature that can be associated with desiccated Baralyme®. Methanol can react with Compound A to form the methoxy addition product Compound B. Compound B can undergo further HF elimination to form Compounds C, D, and E. Sevoflurane degradants were observed in the respiratory circuit of an experimental anesthesia machine using desiccated CO2 absorbents and maximum sevoflurane concentrations (8%) for extended periods of time (> 2 hours). Concentrations of formaldehyde observed with desiccated soda lime in this experimental anesthesia respiratory circuit were consistent with levels that could potentially result in respiratory irritation. Although KOH containing CO2 absorbents are no longer commercially available, in the laboratory experiments, exposure of sevoflurane to the desiccated KOH containing CO2 absorbent, Baralyme, resulted in the detection of substantially greater degradant levels."
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"Description": "Sevoflurane USP, volatile liquid for inhalation, a nonflammable and nonexplosive liquid administered by vaporization, is a halogenated general inhalation anesthetic drug. Sevoflurane is fluoromethyl 2,2,2,-trifluoro-1-(trifluoromethyl) ethyl ether and its structural formula is. Sevoflurane is nonflammable and nonexplosive as defined by the requirements of International Electrotechnical Commission 601-2-13. Sevoflurane is a clear, colorless, liquid containing no additives. Sevoflurane is not corrosive to stainless steel, brass, aluminum, nickel-plated brass, chrome-plated brass or copper beryllium. Sevoflurane is nonpungent. It is miscible with ethanol, ether, chloroform, and benzene, and it is slightly soluble in water. Sevoflurane is stable when stored under normal room lighting conditions according to instructions. No discernible degradation of sevoflurane occurs in the presence of strong acids or heat. When in contact with alkaline CO2 absorbents (e.g., Baralyme® and to a lesser extent soda lime) within the anesthesia machine, sevoflurane can undergo degradation under certain conditions. Degradation of sevoflurane is minimal, and degradants are either undetectable or present in non-toxic amounts when used as directed with fresh absorbents. Sevoflurane degradation and subsequent degradant formation are enhanced by increasing absorbent temperature increased sevoflurane concentration, decreased fresh gas flow and desiccated CO2 absorbents (especially with potassium hydroxide containing absorbents e.g., Baralyme). Sevoflurane alkaline degradation occurs by two pathways. The first results from the loss of hydrogen fluoride with the formation of pentafluoroisopropenyl fluoromethyl ether, (PIFE, C4H2F6O), also known as Compound A, and trace amounts of pentafluoromethoxy isopropyl fluoromethyl ether, (PMFE, C5H6F6O), also known as Compound B. The second pathway for degradation of sevoflurane, which occurs primarily in the presence of desiccated CO2 absorbents, is discussed later. In the first pathway, the defluorination pathway, the production of degradants in the anesthesia circuit results from the extraction of the acidic proton in the presence of a strong base (KOH and/or NaOH) forming an alkene (Compound A) from sevoflurane similar to formation of 2-bromo-2-chloro-1,1-difluoro ethylene (BCDFE) from halothane. Laboratory simulations have shown that the concentration of these degradants is inversely correlated with the fresh gas flow rate (See Figure 1). Figure 1. Fresh Gas Flow Rate versus Compound A Levels in a Circle Absorber System. Since the reaction of carbon dioxide with absorbents is exothermic, the temperature increase will be determined by quantities of CO2 absorbed, which in turn will depend on fresh gas flow in the anesthesia circle system, metabolic status of the patient, and ventilation. The relationship of temperature produced by varying levels of CO2 and Compound A production is illustrated in the following in vitro simulation where CO2 was added to a circle absorber system. Figure 2. Carbon Dioxide Flow versus Compound A and Maximum Temperature. Compound A concentration in a circle absorber system increases as a function of increasing CO2 absorbent temperature and composition (Baralyme producing higher levels than soda lime), increased body temperature, and increased minute ventilation, and decreasing fresh gas flow rates. It has been reported that the concentration of Compound A increases significantly with prolonged dehydration of Baralyme. Compound A exposure in patients also has been shown to rise with increased sevoflurane concentrations and duration of anesthesia. In a clinical study in which sevoflurane was administered to patients under low flow conditions for ≥ 2 hours at flow rates of 1 Liter/minute, Compound A levels were measured in an effort to determine the relationship between MAC hours and Compound A levels produced. The relationship between Compound A levels and sevoflurane exposure are shown in Figure 2a. Figure 2a. ppm·hr versus MAC·hr at Flow Rate of 1 L/min. Compound A has been shown to be nephrotoxic in rats after exposures that have varied in duration from one to three hours. No histopathologic change was seen at a concentration of up to 270 ppm for one hour. Sporadic single cell necrosis of proximal tubule cells has been reported at a concentration of 114 ppm after a 3-hour exposure to Compound A in rats. The LC50 reported at 1 hour is 1050-1090 ppm (male-female) and, at 3 hours, 350-490 ppm (male-female). An experiment was performed comparing sevoflurane plus 75 or 100 ppm Compound A with an active control to evaluate the potential nephrotoxicity of Compound A in non-human primates. A single 8-hour exposure of Sevoflurane in the presence of Compound A produced single-cell renal tubular degeneration and single-cell necrosis in cynomolgus monkeys. These changes are consistent with the increased urinary protein, glucose level and enzymic activity noted on days one and three on the clinical pathology evaluation. This nephrotoxicity produced by Compound A is dose and duration of exposure dependent. At a fresh gas flow rate of 1 L/min, mean maximum concentrations of Compound A in the anesthesia circuit in clinical settings are approximately 20 ppm (0.002%) with soda lime and 30 ppm (0.003%) with Baralyme in adult patients; mean maximum concentrations in pediatric patients with soda lime are about half those found in adults. The highest concentration observed in a single patient with Baralyme was 61 ppm (0.0061%) and 32 ppm (0.0032%) with soda lime. The levels of Compound A at which toxicity occurs in humans is not known. The second pathway for degradation of sevoflurane occurs primarily in the presence of desiccated CO2 absorbents and leads to the dissociation of sevoflurane into hexafluoroisopropanol (HFIP) and formaldehyde. HFIP is inactive, non-genotoxic, rapidly glucuronidated and cleared by the liver. Formaldehyde is present during normal metabolic processes. Upon exposure to a highly desiccated absorbent, formaldehyde can further degrade into methanol and formate. Formate can contribute to the formation of carbon monoxide in the presence of high temperature that can be associated with desiccated Baralyme®. Methanol can react with Compound A to form the methoxy addition product Compound B. Compound B can undergo further HF elimination to form Compounds C, D, and E. Sevoflurane degradants were observed in the respiratory circuit of an experimental anesthesia machine using desiccated CO2 absorbents and maximum sevoflurane concentrations (8%) for extended periods of time (> 2 hours). Concentrations of formaldehyde observed with desiccated soda lime in this experimental anesthesia respiratory circuit were consistent with levels that could potentially result in respiratory irritation. Although KOH containing CO2 absorbents are no longer commercially available, in the laboratory experiments, exposure of sevoflurane to the desiccated KOH containing CO2 absorbent, Baralyme, resulted in the detection of substantially greater degradant levels."
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"Description": "Sevoflurane, USP, volatile liquid for inhalation, a nonflammable and nonexplosive liquid administered by vaporization, is a halogenated general inhalation anesthetic drug. Sevoflurane, USP is fluoromethyl 2,2,2,-trifluoro-1-(trifluoromethyl) ethyl ether and its structural formula is. Sevoflurane, USP is nonflammable and nonexplosive as defined by the requirements of International Electrotechnical Commission 601-2-13. Sevoflurane, USP is a clear, colorless, liquid containing no additives. Sevoflurane, USP is not corrosive to stainless steel, brass, aluminum, nickel-plated brass, chrome-plated brass or copper beryllium. Sevoflurane, USP is nonpungent. It is miscible with ethanol, ether, chloroform, and benzene, and it is slightly soluble in water. Sevoflurane, USP is stable when stored under normal room lighting conditions according to instructions. No discernible degradation of sevoflurane, USP occurs in the presence of strong acids or heat. When in contact with alkaline CO2 absorbents (e.g., Baralyme® and to a lesser extent soda lime) within the anesthesia machine, Sevoflurane, USP can undergo degradation under certain conditions. Degradation of sevoflurane, USP is minimal, and degradants are either undetectable or present in non-toxic amounts when used as directed with fresh absorbents. Sevoflurane, USP degradation and subsequent degradant formation are enhanced by increasing absorbent temperature increased sevoflurane, USP concentration, decreased fresh gas flow and desiccated CO2 absorbents (especially with potassium hydroxide containing absorbents e.g., Baralyme). Sevoflurane, USP alkaline degradation occurs by two pathways. The first results from the loss of hydrogen fluoride with the formation of pentafluoroisopropenyl fluoromethyl ether, (PIFE, C4H2F6O), also known as Compound A, and trace amounts of pentafluoromethoxy isopropyl fluoromethyl ether, (PMFE, C5H6F6O), also known as Compound B. The second pathway for degradation of sevoflurane, USP, which occurs primarily in the presence of desiccated CO2 absorbents, is discussed later. In the first pathway, the defluorination pathway, the production of degradants in the anesthesia circuit results from the extraction of the acidic proton in the presence of a strong base (KOH and/or NaOH) forming an alkene (Compound A) from sevoflurane, USP similar to formation of 2-bromo-2-chloro-1,1-difluoro ethylene (BCDFE) from halothane. Laboratory simulations have shown that the concentration of these degradants is inversely correlated with the fresh gas flow rate (See Figure 1). Since the reaction of carbon dioxide with absorbents is exothermic, the temperature increase will be determined by quantities of CO2 absorbed, which in turn will depend on fresh gas flow in the anesthesia circle system, metabolic status of the patient, and ventilation. The relationship of temperature produced by varying levels of CO2 and Compound A production is illustrated in the following in vitro simulation where CO2 was added to a circle absorber system. Compound A concentration in a circle absorber system increases as a function of increasing CO2 absorbent temperature and composition (Baralyme producing higher levels than soda lime), increased body temperature, and increased minute ventilation, and decreasing fresh gas flow rates. It has been reported that the concentration of Compound A increases significantly with prolonged dehydration of Baralyme. Compound A exposure in patients also has been shown to rise with increased sevoflurane, USP concentrations and duration of anesthesia. In a clinical study in which sevoflurane, USP was administered to patients under low flow conditions for ≥ 2 hours at flow rates of 1 Liter/minute, Compound A levels were measured in an effort to determine the relationship between MAC hours and Compound A levels produced. The relationship between Compound A levels and sevoflurane, USP exposure are shown in Figure 2a. Compound A has been shown to be nephrotoxic in rats after exposures that have varied in duration from one to three hours. No histopathologic change was seen at a concentration of up to 270 ppm for one hour. Sporadic single cell necrosis of proximal tubule cells has been reported at a concentration of 114 ppm after a 3-hour exposure to Compound A in rats. The LC50 reported at 1 hour is 1050-1090 ppm (male-female) and, at 3 hours, 350-490 ppm (male-female). An experiment was performed comparing sevoflurane, USP plus 75 or 100 ppm Compound A with an active control to evaluate the potential nephrotoxicity of Compound A in non-human primates. A single 8-hour exposure of Sevoflurane, USP in the presence of Compound A produced single-cell renal tubular degeneration and single-cell necrosis in cynomolgus monkeys. These changes are consistent with the increased urinary protein, glucose level and enzymic activity noted on days one and three on the clinical pathology evaluation. This nephrotoxicity produced by Compound A is dose and duration of exposure dependent. At a fresh gas flow rate of 1 L/min, mean maximum concentrations of Compound A in the anesthesia circuit in clinical settings are approximately 20 ppm (0.002%) with soda lime and 30 ppm (0.003%) with Baralyme in adult patients; mean maximum concentrations in pediatric patients with soda lime are about half those found in adults. The highest concentration observed in a single patient with Baralyme was 61 ppm (0.0061%) and 32 ppm (0.0032%) with soda lime. The levels of Compound A at which toxicity occurs in humans is not known. The second pathway for degradation of sevoflurane, USP occurs primarily in the presence of desiccated CO2 absorbents and leads to the dissociation of sevoflurane, USP into hexafluoroisopropanol (HFIP) and formaldehyde. HFIP is inactive, non-genotoxic, rapidly glucuronidated and cleared by the liver. Formaldehyde is present during normal metabolic processes. Upon exposure to a highly desiccated absorbent, formaldehyde can further degrade into methanol and formate. Formate can contribute to the formation of carbon monoxide in the presence of high temperature that can be associated with desiccated Baralyme®. Methanol can react with Compound A to form the methoxy addition product Compound B. Compound B can undergo further HF elimination to form Compounds C, D, and E. Sevoflurane, USP degradants were observed in the respiratory circuit of an experimental anesthesia machine using desiccated CO2 absorbents and maximum sevoflurane, USP concentrations (8%) for extended periods of time (˃ 2 hours). Concentrations of formaldehyde observed with desiccated soda lime in this experimental anesthesia respiratory circuit were consistent with levels that could potentially result in respiratory irritation. Although KOH containing CO2 absorbents are no longer commercially available, in the laboratory experiments, exposure of sevoflurane, USP to the desiccated KOH containing CO2 absorbent, Baralyme, resulted in the detection of substantially greater degradant levels."
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"Description": "Sevoflurane, USP, volatile liquid for inhalation, a nonflammable and nonexplosive liquid administered by vaporization, is a halogenated general inhalation anesthetic drug. Sevoflurane, USP is fluoromethyl 2,2,2,-trifluoro-1-(trifluoromethyl) ethyl ether and its structural formula is. Sevoflurane, USP is nonflammable and nonexplosive as defined by the requirements of International Electrotechnical Commission 601-2-13. Sevoflurane, USP is a clear, colorless, liquid containing no additives. Sevoflurane, USP is not corrosive to stainless steel, brass, aluminum, nickel-plated brass, chrome-plated brass or copper beryllium. Sevoflurane, USP is nonpungent. It is miscible with ethanol, ether, chloroform, and benzene, and it is slightly soluble in water. Sevoflurane, USP is stable when stored under normal room lighting conditions according to instructions. No discernible degradation of sevoflurane, USP occurs in the presence of strong acids or heat. When in contact with alkaline CO2 absorbents (e.g., Baralyme® and to a lesser extent soda lime) within the anesthesia machine, Sevoflurane, USP can undergo degradation under certain conditions. Degradation of sevoflurane, USP is minimal, and degradants are either undetectable or present in non-toxic amounts when used as directed with fresh absorbents. Sevoflurane, USP degradation and subsequent degradant formation are enhanced by increasing absorbent temperature increased sevoflurane, USP concentration, decreased fresh gas flow and desiccated CO2 absorbents (especially with potassium hydroxide containing absorbents e.g., Baralyme). Sevoflurane, USP alkaline degradation occurs by two pathways. The first results from the loss of hydrogen fluoride with the formation of pentafluoroisopropenyl fluoromethyl ether, (PIFE, C4H2F6O), also known as Compound A, and trace amounts of pentafluoromethoxy isopropyl fluoromethyl ether, (PMFE, C5H6F6O), also known as Compound B. The second pathway for degradation of sevoflurane, USP, which occurs primarily in the presence of desiccated CO2 absorbents, is discussed later. In the first pathway, the defluorination pathway, the production of degradants in the anesthesia circuit results from the extraction of the acidic proton in the presence of a strong base (KOH and/or NaOH) forming an alkene (Compound A) from sevoflurane, USP similar to formation of 2-bromo-2-chloro-1,1-difluoro ethylene (BCDFE) from halothane. Laboratory simulations have shown that the concentration of these degradants is inversely correlated with the fresh gas flow rate (See Figure 1). Since the reaction of carbon dioxide with absorbents is exothermic, the temperature increase will be determined by quantities of CO2 absorbed, which in turn will depend on fresh gas flow in the anesthesia circle system, metabolic status of the patient, and ventilation. The relationship of temperature produced by varying levels of CO2 and Compound A production is illustrated in the following in vitro simulation where CO2 was added to a circle absorber system. Compound A concentration in a circle absorber system increases as a function of increasing CO2 absorbent temperature and composition (Baralyme producing higher levels than soda lime), increased body temperature, and increased minute ventilation, and decreasing fresh gas flow rates. It has been reported that the concentration of Compound A increases significantly with prolonged dehydration of Baralyme. Compound A exposure in patients also has been shown to rise with increased sevoflurane, USP concentrations and duration of anesthesia. In a clinical study in which sevoflurane, USP was administered to patients under low flow conditions for ≥ 2 hours at flow rates of 1 Liter/minute, Compound A levels were measured in an effort to determine the relationship between MAC hours and Compound A levels produced. The relationship between Compound A levels and sevoflurane, USP exposure are shown in Figure 2a. Compound A has been shown to be nephrotoxic in rats after exposures that have varied in duration from one to three hours. No histopathologic change was seen at a concentration of up to 270 ppm for one hour. Sporadic single cell necrosis of proximal tubule cells has been reported at a concentration of 114 ppm after a 3-hour exposure to Compound A in rats. The LC50 reported at 1 hour is 1050-1090 ppm (male-female) and, at 3 hours, 350-490 ppm (male-female). An experiment was performed comparing sevoflurane, USP plus 75 or 100 ppm Compound A with an active control to evaluate the potential nephrotoxicity of Compound A in non-human primates. A single 8-hour exposure of Sevoflurane, USP in the presence of Compound A produced single-cell renal tubular degeneration and single-cell necrosis in cynomolgus monkeys. These changes are consistent with the increased urinary protein, glucose level and enzymic activity noted on days one and three on the clinical pathology evaluation. This nephrotoxicity produced by Compound A is dose and duration of exposure dependent. At a fresh gas flow rate of 1 L/min, mean maximum concentrations of Compound A in the anesthesia circuit in clinical settings are approximately 20 ppm (0.002%) with soda lime and 30 ppm (0.003%) with Baralyme in adult patients; mean maximum concentrations in pediatric patients with soda lime are about half those found in adults. The highest concentration observed in a single patient with Baralyme was 61 ppm (0.0061%) and 32 ppm (0.0032%) with soda lime. The levels of Compound A at which toxicity occurs in humans is not known. The second pathway for degradation of sevoflurane, USP occurs primarily in the presence of desiccated CO2 absorbents and leads to the dissociation of sevoflurane, USP into hexafluoroisopropanol (HFIP) and formaldehyde. HFIP is inactive, non-genotoxic, rapidly glucuronidated and cleared by the liver. Formaldehyde is present during normal metabolic processes. Upon exposure to a highly desiccated absorbent, formaldehyde can further degrade into methanol and formate. Formate can contribute to the formation of carbon monoxide in the presence of high temperature that can be associated with desiccated Baralyme®. Methanol can react with Compound A to form the methoxy addition product Compound B. Compound B can undergo further HF elimination to form Compounds C, D, and E. Sevoflurane, USP degradants were observed in the respiratory circuit of an experimental anesthesia machine using desiccated CO2 absorbents and maximum sevoflurane, USP concentrations (8%) for extended periods of time (> 2 hours). Concentrations of formaldehyde observed with desiccated soda lime in this experimental anesthesia respiratory circuit were consistent with levels that could potentially result in respiratory irritation. Although KOH containing CO2 absorbents are no longer commercially available, in the laboratory experiments, exposure of sevoflurane, USP to the desiccated KOH containing CO2 absorbent, Baralyme, resulted in the detection of substantially greater degradant levels."
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"Description": "Sevoflurane, USP, volatile liquid for inhalation, a nonflammable and nonexplosive liquid administered by vaporization, is a halogenated general inhalation anesthetic drug. Sevoflurane, USP is fluoromethyl 2,2,2,-trifluoro-1-(trifluoromethyl) ethyl ether and its structural formula is. Sevoflurane, USP is nonflammable and nonexplosive as defined by the requirements of International Electrotechnical Commission 601-2-13. Sevoflurane, USP is a clear, colorless, liquid containing no additives. Sevoflurane, USP is not corrosive to stainless steel, brass, aluminum, nickel-plated brass, chrome-plated brass or copper beryllium. Sevoflurane, USP is nonpungent. It is miscible with ethanol, ether, chloroform, and benzene, and it is slightly soluble in water. Sevoflurane, USP is stable when stored under normal room lighting conditions according to instructions. No discernible degradation of sevoflurane, USP occurs in the presence of strong acids or heat. When in contact with alkaline CO2 absorbents (e.g., Baralyme® and to a lesser extent soda lime) within the anesthesia machine, Sevoflurane, USP can undergo degradation under certain conditions. Degradation of sevoflurane, USP is minimal, and degradants are either undetectable or present in non-toxic amounts when used as directed with fresh absorbents. Sevoflurane, USP degradation and subsequent degradant formation are enhanced by increasing absorbent temperature increased sevoflurane, USP concentration, decreased fresh gas flow and desiccated CO2 absorbents (especially with potassium hydroxide containing absorbents e.g., Baralyme). Sevoflurane, USP alkaline degradation occurs by two pathways. The first results from the loss of hydrogen fluoride with the formation of pentafluoroisopropenyl fluoromethyl ether, (PIFE, C4H2F6O), also known as Compound A, and trace amounts of pentafluoromethoxy isopropyl fluoromethyl ether, (PMFE, C5H6F6O), also known as Compound B. The second pathway for degradation of sevoflurane, USP, which occurs primarily in the presence of desiccated CO2 absorbents, is discussed later. In the first pathway, the defluorination pathway, the production of degradants in the anesthesia circuit results from the extraction of the acidic proton in the presence of a strong base (KOH and/or NaOH) forming an alkene (Compound A) from sevoflurane, USP similar to formation of 2-bromo-2-chloro-1,1-difluoro ethylene (BCDFE) from halothane. Laboratory simulations have shown that the concentration of these degradants is inversely correlated with the fresh gas flow rate (See Figure 1). Since the reaction of carbon dioxide with absorbents is exothermic, the temperature increase will be determined by quantities of CO2 absorbed, which in turn will depend on fresh gas flow in the anesthesia circle system, metabolic status of the patient, and ventilation. The relationship of temperature produced by varying levels of CO2 and Compound A production is illustrated in the following in vitro simulation where CO2 was added to a circle absorber system. Compound A concentration in a circle absorber system increases as a function of increasing CO2 absorbent temperature and composition (Baralyme producing higher levels than soda lime), increased body temperature, and increased minute ventilation, and decreasing fresh gas flow rates. It has been reported that the concentration of Compound A increases significantly with prolonged dehydration of Baralyme. Compound A exposure in patients also has been shown to rise with increased sevoflurane, USP concentrations and duration of anesthesia. In a clinical study in which sevoflurane, USP was administered to patients under low flow conditions for ≥ 2 hours at flow rates of 1 Liter/minute, Compound A levels were measured in an effort to determine the relationship between MAC hours and Compound A levels produced. The relationship between Compound A levels and sevoflurane, USP exposure are shown in Figure 2a. Compound A has been shown to be nephrotoxic in rats after exposures that have varied in duration from one to three hours. No histopathologic change was seen at a concentration of up to 270 ppm for one hour. Sporadic single cell necrosis of proximal tubule cells has been reported at a concentration of 114 ppm after a 3-hour exposure to Compound A in rats. The LC50 reported at 1 hour is 1050-1090 ppm (male-female) and, at 3 hours, 350-490 ppm (male-female). An experiment was performed comparing sevoflurane, USP plus 75 or 100 ppm Compound A with an active control to evaluate the potential nephrotoxicity of Compound A in non-human primates. A single 8-hour exposure of Sevoflurane, USP in the presence of Compound A produced single-cell renal tubular degeneration and single-cell necrosis in cynomolgus monkeys. These changes are consistent with the increased urinary protein, glucose level and enzymic activity noted on days one and three on the clinical pathology evaluation. This nephrotoxicity produced by Compound A is dose and duration of exposure dependent. At a fresh gas flow rate of 1 L/min, mean maximum concentrations of Compound A in the anesthesia circuit in clinical settings are approximately 20 ppm (0.002%) with soda lime and 30 ppm (0.003%) with Baralyme in adult patients; mean maximum concentrations in pediatric patients with soda lime are about half those found in adults. The highest concentration observed in a single patient with Baralyme was 61 ppm (0.0061%) and 32 ppm (0.0032%) with soda lime. The levels of Compound A at which toxicity occurs in humans is not known. The second pathway for degradation of sevoflurane, USP occurs primarily in the presence of desiccated CO2 absorbents and leads to the dissociation of sevoflurane, USP into hexafluoroisopropanol (HFIP) and formaldehyde. HFIP is inactive, non-genotoxic, rapidly glucuronidated and cleared by the liver. Formaldehyde is present during normal metabolic processes. Upon exposure to a highly desiccated absorbent, formaldehyde can further degrade into methanol and formate. Formate can contribute to the formation of carbon monoxide in the presence of high temperature that can be associated with desiccated Baralyme®. Methanol can react with Compound A to form the methoxy addition product Compound B. Compound B can undergo further HF elimination to form Compounds C, D, and E. Sevoflurane, USP degradants were observed in the respiratory circuit of an experimental anesthesia machine using desiccated CO2 absorbents and maximum sevoflurane, USP concentrations (8%) for extended periods of time (˃ 2 hours). Concentrations of formaldehyde observed with desiccated soda lime in this experimental anesthesia respiratory circuit were consistent with levels that could potentially result in respiratory irritation. Although KOH containing CO2 absorbents are no longer commercially available, in the laboratory experiments, exposure of sevoflurane, USP to the desiccated KOH containing CO2 absorbent, Baralyme, resulted in the detection of substantially greater degradant levels."
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"Description": "Sevoflurane, USP, volatile liquid for inhalation, a nonflammable and nonexplosive liquid administered by vaporization, is a halogenated general inhalation anesthetic drug. Sevoflurane, USP is fluoromethyl 2,2,2,-trifluoro-1-(trifluoromethyl) ethyl ether and its structural formula is. Sevoflurane, USP is nonflammable and nonexplosive as defined by the requirements of International Electrotechnical Commission 601-2-13. Sevoflurane, USP is a clear, colorless, liquid containing no additives. Sevoflurane, USP is not corrosive to stainless steel, brass, aluminum, nickel-plated brass, chrome-plated brass or copper beryllium. Sevoflurane, USP is nonpungent. It is miscible with ethanol, ether, chloroform, and benzene, and it is slightly soluble in water. Sevoflurane, USP is stable when stored under normal room lighting conditions according to instructions. No discernible degradation of sevoflurane, USP occurs in the presence of strong acids or heat. When in contact with alkaline CO2 absorbents (e.g., Baralyme® and to a lesser extent soda lime) within the anesthesia machine, Sevoflurane, USP can undergo degradation under certain conditions. Degradation of sevoflurane, USP is minimal, and degradants are either undetectable or present in non-toxic amounts when used as directed with fresh absorbents. Sevoflurane, USP degradation and subsequent degradant formation are enhanced by increasing absorbent temperature increased sevoflurane, USP concentration, decreased fresh gas flow and desiccated CO2 absorbents (especially with potassium hydroxide containing absorbents e.g., Baralyme). Sevoflurane, USP alkaline degradation occurs by two pathways. The first results from the loss of hydrogen fluoride with the formation of pentafluoroisopropenyl fluoromethyl ether, (PIFE, C4H2F6O), also known as Compound A, and trace amounts of pentafluoromethoxy isopropyl fluoromethyl ether, (PMFE, C5H6F6O), also known as Compound B. The second pathway for degradation of sevoflurane, USP, which occurs primarily in the presence of desiccated CO2 absorbents, is discussed later. In the first pathway, the defluorination pathway, the production of degradants in the anesthesia circuit results from the extraction of the acidic proton in the presence of a strong base (KOH and/or NaOH) forming an alkene (Compound A) from sevoflurane, USP similar to formation of 2-bromo-2-chloro-1,1-difluoro ethylene (BCDFE) from halothane. Laboratory simulations have shown that the concentration of these degradants is inversely correlated with the fresh gas flow rate (See Figure 1). Since the reaction of carbon dioxide with absorbents is exothermic, the temperature increase will be determined by quantities of CO2 absorbed, which in turn will depend on fresh gas flow in the anesthesia circle system, metabolic status of the patient, and ventilation. The relationship of temperature produced by varying levels of CO2 and Compound A production is illustrated in the following in vitro simulation where CO2 was added to a circle absorber system. Compound A concentration in a circle absorber system increases as a function of increasing CO2 absorbent temperature and composition (Baralyme producing higher levels than soda lime), increased body temperature, and increased minute ventilation, and decreasing fresh gas flow rates. It has been reported that the concentration of Compound A increases significantly with prolonged dehydration of Baralyme. Compound A exposure in patients also has been shown to rise with increased sevoflurane, USP concentrations and duration of anesthesia. In a clinical study in which sevoflurane, USP was administered to patients under low flow conditions for ≥ 2 hours at flow rates of 1 Liter/minute, Compound A levels were measured in an effort to determine the relationship between MAC hours and Compound A levels produced. The relationship between Compound A levels and sevoflurane, USP exposure are shown in Figure 2a. Compound A has been shown to be nephrotoxic in rats after exposures that have varied in duration from one to three hours. No histopathologic change was seen at a concentration of up to 270 ppm for one hour. Sporadic single cell necrosis of proximal tubule cells has been reported at a concentration of 114 ppm after a 3-hour exposure to Compound A in rats. The LC50 reported at 1 hour is 1050-1090 ppm (male-female) and, at 3 hours, 350-490 ppm (male-female). An experiment was performed comparing sevoflurane, USP plus 75 or 100 ppm Compound A with an active control to evaluate the potential nephrotoxicity of Compound A in non-human primates. A single 8-hour exposure of Sevoflurane, USP in the presence of Compound A produced single-cell renal tubular degeneration and single-cell necrosis in cynomolgus monkeys. These changes are consistent with the increased urinary protein, glucose level and enzymic activity noted on days one and three on the clinical pathology evaluation. This nephrotoxicity produced by Compound A is dose and duration of exposure dependent. At a fresh gas flow rate of 1 L/min, mean maximum concentrations of Compound A in the anesthesia circuit in clinical settings are approximately 20 ppm (0.002%) with soda lime and 30 ppm (0.003%) with Baralyme in adult patients; mean maximum concentrations in pediatric patients with soda lime are about half those found in adults. The highest concentration observed in a single patient with Baralyme was 61 ppm (0.0061%) and 32 ppm (0.0032%) with soda lime. The levels of Compound A at which toxicity occurs in humans is not known. The second pathway for degradation of sevoflurane, USP occurs primarily in the presence of desiccated CO2 absorbents and leads to the dissociation of sevoflurane, USP into hexafluoroisopropanol (HFIP) and formaldehyde. HFIP is inactive, non-genotoxic, rapidly glucuronidated and cleared by the liver. Formaldehyde is present during normal metabolic processes. Upon exposure to a highly desiccated absorbent, formaldehyde can further degrade into methanol and formate. Formate can contribute to the formation of carbon monoxide in the presence of high temperature that can be associated with desiccated Baralyme®. Methanol can react with Compound A to form the methoxy addition product Compound B. Compound B can undergo further HF elimination to form Compounds C, D, and E. Sevoflurane, USP degradants were observed in the respiratory circuit of an experimental anesthesia machine using desiccated CO2 absorbents and maximum sevoflurane, USP concentrations (8%) for extended periods of time (> 2 hours). Concentrations of formaldehyde observed with desiccated soda lime in this experimental anesthesia respiratory circuit were consistent with levels that could potentially result in respiratory irritation. Although KOH containing CO2 absorbents are no longer commercially available, in the laboratory experiments, exposure of sevoflurane, USP to the desiccated KOH containing CO2 absorbent, Baralyme, resulted in the detection of substantially greater degradant levels."
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"Description": "Sevoflurane, volatile liquid for inhalation, a nonflammable and nonexplosive liquid administered by vaporization, is a halogenated general inhalation anesthetic drug. Sevoflurane is fluoromethyl 2,2,2,-trifluoro-1-(trifluoromethyl) ethyl ether and its structural formula is. Sevoflurane is nonflammable and nonexplosive as defined by the requirements of International Electrotechnical Commission 601-2-13. Sevoflurane is a clear, colorless, liquid containing no additives. Sevoflurane is not corrosive to stainless steel, brass, aluminum, nickel-plated brass, chrome-plated brass or copper beryllium. Sevoflurane is nonpungent. It is miscible with ethanol, ether, chloroform, and benzene, and it is slightly soluble in water. Sevoflurane is stable when stored under normal room lighting conditions according to instructions. No discernible degradation of sevoflurane occurs in the presence of strong acids or heat. When in contact with alkaline CO2 absorbents (e.g Baralyme® and to a lesser extent soda lime) within the anesthesia machine, sevoflurane can undergo degradation under certain conditions. Degradation of sevoflurane is minimal, and degradants are either undetectable or present in non-toxic amounts when used as directed with fresh absorbents. Sevoflurane degradation and subsequent degradant formation are enhanced by increasing absorbent temperature increased sevoflurane concentration, decreased fresh gas flow and desiccated CO2 absorbents (especially with potassium hydroxide containing absorbents e.g.Baralyme). Sevoflurane alkaline degradation occurs by two pathways. The first results from the loss of hydrogen fluoride with the formation of pentafluoroisopropenyl fluoromethyl ether, (PIFE, C4H2F6O), also known as Compound A, and trace amounts of pentafluoromethoxy isopropyl fluoromethyl ether, (PMFE, C5H6F6O), also known as Compound B. The second pathway for degradation of sevoflurane, which occurs primarily in the presence of desiccated CO2 absorbents, is discussed later. In the first pathway, the defluorination pathway, the production of degradants in the anesthesia circuit results from the extraction of the acidic proton in the presence of a strong base (KOH and/or NaOH) forming an alkene (Compound A) from sevoflurane similar to formation of 2-bromo-2-chloro-1, 1-difluoro ethylene (BCDFE) from halothane. Laboratory simulations have shown that the concentration of these degradants is inversely correlated with the fresh gas flow rate (See Figure 1). Since the reaction of carbon dioxide with absorbents is exothermic, the temperature increase will be determined by quantities of CO2 absorbed, which in turn will depend on fresh gas flow in the anesthesia circle system, metabolic status of the patient, and ventilation. The relationship of temperature produced by varying levels of CO2 and Compound A production is illustrated in the following in vitro simulation where CO2 was added to a circle absorber system. Compound A concentration in a circle absorber system increases as a function of increasing CO2 absorbent temperature and composition (Baralyme producing higher levels than soda lime), increased body temperature, and increased minute ventilation, and decreasing fresh gas flow rates. It has been reported that the concentration of Compound A increases significantly with prolonged dehydration of Baralyme. Compound A exposure in patients also has been shown to rise with increased sevoflurane concentrations and duration of anesthesia. In a clinical study in which sevoflurane was administered to patients under low flow conditions for ≥2 hours at flow rates of 1 Liter/minute, Compound A levels were measured in an effort to determine the relationship between MAC hours and Compound A levels produced. The relationship between Compound A levels and sevoflurane exposure are shown in Figure 2a. Compound A has been shown to be nephrotoxic in rats after exposures that have varied in duration from one to three hours. No histopathologic change was seen at a concentration of up to 270 ppm for one hour. Sporadic single cell necrosis of proximal tubule cells has been reported at a concentration of 114 ppm after a 3-hour exposure to Compound A in rats. The LC50 reported at 1 hour is 1050 to 1090 ppm (male-female) and, at 3 hours, 350 to 490 ppm (male-female). An experiment was performed comparing sevoflurane plus 75 or 100 ppm Compound A with an active control to evaluate the potential nephrotoxicity of Compound A in non-human primates. A single 8-hour exposure of Sevoflurane in the presence of Compound A produced single-cell renal tubular degeneration and single-cell necrosis in cynomolgus monkeys. These changes are consistent with the increased urinary protein, glucose level and enzymic activity noted on days one and three on the clinical pathology evaluation. This nephrotoxicity produced by Compound A is dose and duration of exposure dependent. At a fresh gas flow rate of 1 L/min, mean maximum concentrations of Compound A in the anesthesia circuit in clinical settings are approximately 20 ppm (0.002%) with soda lime and 30 ppm (0.003%) with Baralyme in adult patients; mean maximum concentrations in pediatric patients with soda lime are about half those found in adults. The highest concentration observed in a single patient with Baralyme was 61 ppm (0.0061%) and 32 ppm (0.0032%) with soda lime. The levels of Compound A at which toxicity occurs in humans is not known. The second pathway for degradation of sevoflurane occurs primarily in the presence of desiccated CO2 absorbents and leads to the dissociation of sevoflurane into hexafluoroisopropanol (HFIP) and formaldehyde. HFIP is inactive, non-genotoxic, rapidly glucuronidated and cleared by the liver. Formaldehyde is present during normal metabolic processes. Upon exposure to a highly desiccated absorbent, formaldehyde can further degrade into methanol and formate. Formate can contribute to the formation of carbon monoxide in the presence of high temperature that can be associated with desiccated Baralyme®. Methanol can react with Compound A to form the methoxy addition product Compound B. Compound B can undergo further HF elimination to form Compounds C, D, and E. Sevoflurane degradants were observed in the respiratory circuit of an experimental anesthesia machine using desiccated CO2 absorbents and maximum sevoflurane concentrations (8%) for extended periods of time (> 2 hours). Concentrations of formaldehyde observed with desiccated soda lime in this experimental anesthesia respiratory circuit were consistent with levels that could potentially result in respiratory irritation. Although KOH containing CO2 absorbents are no longer commercially available, in the laboratory experiments, exposure of sevoflurane to the desiccated KOH containing CO2 absorbent, Baralyme, resulted in the detection of substantially greater degradant levels."
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<RouteName>AURICULAR (OTIC)</RouteName>
<StartMarketingDate>20040514</StartMarketingDate>
<MarketingCategoryName>ANDA</MarketingCategoryName>
<ApplicationNumber>ANDA076527</ApplicationNumber>
<LabelerName>A-S Medication Solutions</LabelerName>
<SubstanceName>OFLOXACIN</SubstanceName>
<StrengthNumber>3</StrengthNumber>
<StrengthUnit>mg/mL</StrengthUnit>
<Pharm_Classes>Quinolone Antimicrobial [EPC], Quinolones [CS]</Pharm_Classes>
<Status>Active</Status>
<LastUpdate>2024-07-19</LastUpdate>
<PackageNdcExcludeFlag>N</PackageNdcExcludeFlag>
<ProductNdcExcludeFlag>N</ProductNdcExcludeFlag>
<ListingRecordCertifiedThrough>20261231</ListingRecordCertifiedThrough>
<StartMarketingDatePackage>20141128</StartMarketingDatePackage>
<SamplePackage>N</SamplePackage>
<IndicationAndUsage>Ofloxacin otic solution 0.3% is indicated for the treatment of infections caused by susceptible isolates of the designated microorganisms in the specific conditions listed below. Otitis Externa in adults and pediatric patients, 6 months and older, due to Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus. Chronic Suppurative Otitis Media in patients 12 years and older with perforated tympanic membranes due to Proteus mirabilis, Pseudomonas aeruginosa, and Staphylococcus aureus. Acute Otitis Media in pediatric patients one year and older with tympanostomy tubes due to Haemophilus influenzae, Moraxella catarrhalis, Pseudomonas aeruginosa, Staphylococcus aureus,and Streptococcus pneumoniae.</IndicationAndUsage>
<Description>Ofloxacin Otic Solution 0.3% is a sterile aqueous anti-infective (anti-bacterial) solution for otic use. Chemically, ofloxacin has three condensed 6-membered rings made up of a fluorinated carboxy-quinolone with a benzoxazine ring. The chemical name of ofloxacin is: (±)-9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid. The empirical formula of ofloxacin is C18H20FN3O4 and its molecular weight is 361.38. The structural formula is:. Ofloxacin Otic Solution contains 0.3% (3 mg/mL) ofloxacin with benzalkonium chloride (0.0025%), hydrochloric acid, sodium chloride, and water for injection. Additional hydrochloric acid and/or sodium hydroxide may be added to adjust the pH (6.5 ± 0.5).</Description>
</NDC>
<NDC>
<NDCCode>70518-1090-0</NDCCode>
<PackageDescription>30 TABLET, FILM COATED in 1 BLISTER PACK (70518-1090-0) </PackageDescription>
<NDC11Code>70518-1090-00</NDC11Code>
<ProductNDC>70518-1090</ProductNDC>
<ProductTypeName>HUMAN PRESCRIPTION DRUG</ProductTypeName>
<ProprietaryName>Ciprofloxacin</ProprietaryName>
<NonProprietaryName>Ciprofloxacin</NonProprietaryName>
<DosageFormName>TABLET, FILM COATED</DosageFormName>
<RouteName>ORAL</RouteName>
<StartMarketingDate>20180402</StartMarketingDate>
<MarketingCategoryName>ANDA</MarketingCategoryName>
<ApplicationNumber>ANDA075593</ApplicationNumber>
<LabelerName>REMEDYREPACK INC.</LabelerName>
<SubstanceName>CIPROFLOXACIN HYDROCHLORIDE</SubstanceName>
<StrengthNumber>250</StrengthNumber>
<StrengthUnit>mg/1</StrengthUnit>
<Pharm_Classes>Quinolone Antimicrobial [EPC], Quinolones [CS]</Pharm_Classes>
<Status>Deprecated</Status>
<LastUpdate>2022-09-15</LastUpdate>
<PackageNdcExcludeFlag>N</PackageNdcExcludeFlag>
<ProductNdcExcludeFlag>N</ProductNdcExcludeFlag>
<ListingRecordCertifiedThrough>20231231</ListingRecordCertifiedThrough>
<StartMarketingDatePackage>20180402</StartMarketingDatePackage>
<SamplePackage>N</SamplePackage>
</NDC>
<NDC>
<NDCCode>70771-1090-0</NDCCode>
<PackageDescription>1000 TABLET in 1 BOTTLE (70771-1090-0) </PackageDescription>
<NDC11Code>70771-1090-00</NDC11Code>
<ProductNDC>70771-1090</ProductNDC>
<ProductTypeName>HUMAN PRESCRIPTION DRUG</ProductTypeName>
<ProprietaryName>Nadolol</ProprietaryName>
<NonProprietaryName>Nadolol</NonProprietaryName>
<DosageFormName>TABLET</DosageFormName>
<RouteName>ORAL</RouteName>
<StartMarketingDate>20170808</StartMarketingDate>
<MarketingCategoryName>ANDA</MarketingCategoryName>
<ApplicationNumber>ANDA207761</ApplicationNumber>
<LabelerName>Zydus Lifesciences Limited</LabelerName>
<SubstanceName>NADOLOL</SubstanceName>
<StrengthNumber>40</StrengthNumber>
<StrengthUnit>mg/1</StrengthUnit>
<Pharm_Classes>Adrenergic beta-Antagonists [MoA], beta-Adrenergic Blocker [EPC]</Pharm_Classes>
<Status>Active</Status>
<LastUpdate>2024-12-06</LastUpdate>
<PackageNdcExcludeFlag>N</PackageNdcExcludeFlag>
<ProductNdcExcludeFlag>N</ProductNdcExcludeFlag>
<ListingRecordCertifiedThrough>20271231</ListingRecordCertifiedThrough>
<StartMarketingDatePackage>20170808</StartMarketingDatePackage>
<SamplePackage>N</SamplePackage>
</NDC>
<NDC>
<NDCCode>72162-1090-0</NDCCode>
<PackageDescription>1000 TABLET in 1 BOTTLE (72162-1090-0) </PackageDescription>
<NDC11Code>72162-1090-00</NDC11Code>
<ProductNDC>72162-1090</ProductNDC>
<ProductTypeName>HUMAN PRESCRIPTION DRUG</ProductTypeName>
<ProprietaryName>Levothyroxine Sodium</ProprietaryName>
<NonProprietaryName>Levothyroxine Sodium</NonProprietaryName>
<DosageFormName>TABLET</DosageFormName>
<RouteName>ORAL</RouteName>
<StartMarketingDate>20200803</StartMarketingDate>
<MarketingCategoryName>NDA AUTHORIZED GENERIC</MarketingCategoryName>
<ApplicationNumber>NDA021342</ApplicationNumber>
<LabelerName>Bryant Ranch Prepack</LabelerName>
<SubstanceName>LEVOTHYROXINE SODIUM</SubstanceName>
<StrengthNumber>88</StrengthNumber>
<StrengthUnit>ug/1</StrengthUnit>
<Pharm_Classes>Thyroxine [CS], l-Thyroxine [EPC]</Pharm_Classes>
<Status>Active</Status>
<LastUpdate>2026-04-10</LastUpdate>
<PackageNdcExcludeFlag>N</PackageNdcExcludeFlag>
<ProductNdcExcludeFlag>N</ProductNdcExcludeFlag>
<ListingRecordCertifiedThrough>20271231</ListingRecordCertifiedThrough>
<StartMarketingDatePackage>20200803</StartMarketingDatePackage>
<SamplePackage>N</SamplePackage>
<IndicationAndUsage>Hypothyroidism. Levothyroxine sodium tablets are indicated as a replacement therapy in primary (thyroidal), secondary (pituitary) and tertiary (hypothalamic) congenital or acquired hypothyroidism. Pituitary Thyrotropin (Thyroid-Stimulating Hormone, TSH) Suppression. Levothyroxine sodium tablets are indicated as an adjunct to surgery and radioiodine therapy in the management of thyrotropin-dependent well-differentiated thyroid cancer. Limitations of Use: Levothyroxine sodium tablets are not indicated for suppression of benign thyroid nodules and nontoxic diffuse goiter in iodine-sufficient patients as there are no clinical benefits and overtreatment with levothyroxine sodium tablets may induce hyperthyroidism [see Warnings and Precautions (5.4)]. Levothyroxine sodium tablets are not indicated for treatment of hypothyroidism during the recovery phase of subacute thyroiditis.</IndicationAndUsage>
<Description>Levothyroxine sodium tablets, USP contain synthetic crystalline L-3,3',5,5'- tetraiodothyronine sodium salt [levothyroxine (T4) sodium]. Synthetic T4 is chemically identical to that produced in the human thyroid gland. Levothyroxine (T4) sodium has an empirical formula of C15H10I4NNaO4 xH2O (where x = 5), molecular weight of 798.86 g/mol (anhydrous) and structural formula as shown. Levothyroxine sodium tablets for oral administration are supplied in the following strengths: 25 mcg, 50 mcg, 75 mcg, 88 mcg, 100 mcg, 112 mcg, 125 mcg, 137 mcg, 150 mcg, 175 mcg, 200 mcg and 300 mcg. Each levothyroxine sodium tablet contains the inactive ingredients Magnesium Stearate, NF; Microcrystalline Cellulose, NF; Colloidal Silicone Dioxide, NF; and Sodium Starch Glycolate, NF. Each tablet strength meets USP Dissolution Test 2. Table 6 provides a listing of the color additives by tablet strength. Table 6. Levothyroxine Sodium Tablets Color Additives.</Description>
</NDC>
<NDC>
<NDCCode>54871-0001-0</NDCCode>
<PackageDescription>50 kg in 1 DRUM (54871-0001-0) </PackageDescription>
<NDC11Code>54871-0001-00</NDC11Code>
<ProductNDC>54871-0001</ProductNDC>
<ProductTypeName>BULK INGREDIENT</ProductTypeName>
<NonProprietaryName>Chlorzoxazone</NonProprietaryName>
<DosageFormName>POWDER</DosageFormName>
<StartMarketingDate>19831107</StartMarketingDate>
<MarketingCategoryName>BULK INGREDIENT</MarketingCategoryName>
<LabelerName>Syn-Tech Chem. & Pharm. Co., Ltd.</LabelerName>
<SubstanceName>CHLORZOXAZONE</SubstanceName>
<StrengthNumber>1</StrengthNumber>
<StrengthUnit>kg/kg</StrengthUnit>
<Status>Unfinished</Status>
<LastUpdate>2025-12-18</LastUpdate>
<ListingRecordCertifiedThrough>20261231</ListingRecordCertifiedThrough>
<StartMarketingDatePackage>07-NOV-83</StartMarketingDatePackage>
</NDC>
<NDC>
<NDCCode>54871-0092-0</NDCCode>
<PackageDescription>25 kg in 1 DRUM (54871-0092-0) </PackageDescription>
<NDC11Code>54871-0092-00</NDC11Code>
<ProductNDC>54871-0092</ProductNDC>
<ProductTypeName>BULK INGREDIENT</ProductTypeName>
<NonProprietaryName>Phenylephrine Hydrochloride</NonProprietaryName>
<DosageFormName>POWDER</DosageFormName>
<StartMarketingDate>20030410</StartMarketingDate>
<MarketingCategoryName>BULK INGREDIENT</MarketingCategoryName>
<LabelerName>Syn-Tech Chem. & Pharm. Co., Ltd.</LabelerName>
<SubstanceName>PHENYLEPHRINE HYDROCHLORIDE</SubstanceName>
<StrengthNumber>1</StrengthNumber>
<StrengthUnit>kg/kg</StrengthUnit>
<Status>Unfinished</Status>
<LastUpdate>2025-12-18</LastUpdate>
<ListingRecordCertifiedThrough>20261231</ListingRecordCertifiedThrough>
<StartMarketingDatePackage>10-APR-03</StartMarketingDatePackage>
</NDC>
<NDC>
<NDCCode>54871-0101-0</NDCCode>
<PackageDescription>25 kg in 1 DRUM (54871-0101-0) </PackageDescription>
<NDC11Code>54871-0101-00</NDC11Code>
<ProductNDC>54871-0101</ProductNDC>
<ProductTypeName>BULK INGREDIENT</ProductTypeName>
<NonProprietaryName>Pramoxine Hydrochloride</NonProprietaryName>
<DosageFormName>POWDER</DosageFormName>
<StartMarketingDate>19871104</StartMarketingDate>
<MarketingCategoryName>BULK INGREDIENT</MarketingCategoryName>
<LabelerName>Syn-Tech Chem. & Pharm. Co., Ltd.</LabelerName>
<SubstanceName>PRAMOXINE HYDROCHLORIDE</SubstanceName>
<StrengthNumber>1</StrengthNumber>
<StrengthUnit>kg/kg</StrengthUnit>
<Status>Unfinished</Status>
<LastUpdate>2025-12-18</LastUpdate>
<ListingRecordCertifiedThrough>20261231</ListingRecordCertifiedThrough>
<StartMarketingDatePackage>04-NOV-87</StartMarketingDatePackage>
</NDC>
<NDC>
<NDCCode>54871-0801-0</NDCCode>
<PackageDescription>25 kg in 1 DRUM (54871-0801-0)</PackageDescription>
<NDC11Code>54871-0801-00</NDC11Code>
<ProductNDC>54871-0801</ProductNDC>
<ProductTypeName>BULK INGREDIENT</ProductTypeName>
<NonProprietaryName>Metoprolol Succinate</NonProprietaryName>
<DosageFormName>POWDER</DosageFormName>
<StartMarketingDate>20070730</StartMarketingDate>
<MarketingCategoryName>BULK INGREDIENT</MarketingCategoryName>
<LabelerName>Syn-Tech Chem. & Pharm. Co., Ltd.</LabelerName>
<SubstanceName>METOPROLOL SUCCINATE</SubstanceName>
<StrengthNumber>1</StrengthNumber>
<StrengthUnit>kg/kg</StrengthUnit>
<Status>Deprecated</Status>
<LastUpdate>2014-02-04</LastUpdate>
<ListingRecordCertifiedThrough>20171231</ListingRecordCertifiedThrough>
</NDC>
<NDC>
<NDCCode>54871-1084-0</NDCCode>
<PackageDescription>50 kg in 1 DRUM (54871-1084-0) </PackageDescription>
<NDC11Code>54871-1084-00</NDC11Code>
<ProductNDC>54871-1084</ProductNDC>
<ProductTypeName>BULK INGREDIENT</ProductTypeName>
<NonProprietaryName>Diclofenac Sodium</NonProprietaryName>
<DosageFormName>POWDER</DosageFormName>
<StartMarketingDate>19831107</StartMarketingDate>
<MarketingCategoryName>BULK INGREDIENT</MarketingCategoryName>
<LabelerName>Syn-Tech Chem. & Pharm. Co., Ltd.</LabelerName>
<SubstanceName>DICLOFENAC SODIUM</SubstanceName>
<StrengthNumber>1</StrengthNumber>
<StrengthUnit>kg/kg</StrengthUnit>
<Status>Unfinished</Status>
<LastUpdate>2025-12-18</LastUpdate>
<ListingRecordCertifiedThrough>20261231</ListingRecordCertifiedThrough>
<StartMarketingDatePackage>07-NOV-83</StartMarketingDatePackage>
</NDC>
<NDC>
<NDCCode>54871-1087-0</NDCCode>
<PackageDescription>25 kg in 1 DRUM (54871-1087-0) </PackageDescription>
<NDC11Code>54871-1087-00</NDC11Code>
<ProductNDC>54871-1087</ProductNDC>
<ProductTypeName>BULK INGREDIENT</ProductTypeName>
<NonProprietaryName>Metaxalone</NonProprietaryName>
<DosageFormName>POWDER</DosageFormName>
<StartMarketingDate>20040202</StartMarketingDate>
<MarketingCategoryName>BULK INGREDIENT</MarketingCategoryName>
<LabelerName>Syn-Tech Chem. & Pharm. Co., Ltd.</LabelerName>
<SubstanceName>METAXALONE</SubstanceName>
<StrengthNumber>1</StrengthNumber>
<StrengthUnit>kg/kg</StrengthUnit>
<Status>Unfinished</Status>
<LastUpdate>2025-12-18</LastUpdate>
<ListingRecordCertifiedThrough>20261231</ListingRecordCertifiedThrough>
<StartMarketingDatePackage>02-FEB-04</StartMarketingDatePackage>
</NDC>
<NDC>
<NDCCode>54871-1088-0</NDCCode>
<PackageDescription>25 kg in 1 DRUM (54871-1088-0) </PackageDescription>
<NDC11Code>54871-1088-00</NDC11Code>
<ProductNDC>54871-1088</ProductNDC>
<ProductTypeName>BULK INGREDIENT</ProductTypeName>
<NonProprietaryName>Timolol Maleate</NonProprietaryName>
<DosageFormName>POWDER</DosageFormName>
<StartMarketingDate>20110211</StartMarketingDate>
<MarketingCategoryName>BULK INGREDIENT</MarketingCategoryName>
<LabelerName>Syn-Tech Chem. & Pharm. Co., Ltd.</LabelerName>
<SubstanceName>TIMOLOL MALEATE</SubstanceName>
<StrengthNumber>1</StrengthNumber>
<StrengthUnit>kg/kg</StrengthUnit>
<Status>Unfinished</Status>
<LastUpdate>2025-12-18</LastUpdate>
<ListingRecordCertifiedThrough>20261231</ListingRecordCertifiedThrough>
<StartMarketingDatePackage>11-FEB-11</StartMarketingDatePackage>
</NDC>
<NDC>
<NDCCode>54871-1089-0</NDCCode>
<PackageDescription>25 kg in 1 DRUM (54871-1089-0)</PackageDescription>
<NDC11Code>54871-1089-00</NDC11Code>
<ProductNDC>54871-1089</ProductNDC>
<ProductTypeName>BULK INGREDIENT</ProductTypeName>
<NonProprietaryName>Atenolol</NonProprietaryName>
<DosageFormName>POWDER</DosageFormName>
<StartMarketingDate>19930712</StartMarketingDate>
<MarketingCategoryName>BULK INGREDIENT</MarketingCategoryName>
<LabelerName>Syn-Tech Chem. & Pharm. Co., Ltd.</LabelerName>
<SubstanceName>ATENOLOL</SubstanceName>
<StrengthNumber>1</StrengthNumber>
<StrengthUnit>kg/kg</StrengthUnit>
<Status>Deprecated</Status>
<LastUpdate>2014-02-04</LastUpdate>
<ListingRecordCertifiedThrough>20171231</ListingRecordCertifiedThrough>
</NDC>
<NDC>
<NDCCode>54871-1091-0</NDCCode>
<PackageDescription>10 kg in 1 DRUM (54871-1091-0) </PackageDescription>
<NDC11Code>54871-1091-00</NDC11Code>
<ProductNDC>54871-1091</ProductNDC>
<ProductTypeName>BULK INGREDIENT</ProductTypeName>
<NonProprietaryName>Granisetron</NonProprietaryName>
<DosageFormName>POWDER</DosageFormName>
<StartMarketingDate>20120725</StartMarketingDate>
<MarketingCategoryName>BULK INGREDIENT</MarketingCategoryName>
<LabelerName>Syn-Tech Chem. & Pharm. Co., Ltd.</LabelerName>
<SubstanceName>GRANISETRON</SubstanceName>
<StrengthNumber>1</StrengthNumber>
<StrengthUnit>kg/kg</StrengthUnit>
<Status>Unfinished</Status>
<LastUpdate>2025-12-18</LastUpdate>
<ListingRecordCertifiedThrough>20261231</ListingRecordCertifiedThrough>
<StartMarketingDatePackage>25-JUL-12</StartMarketingDatePackage>
</NDC>
<NDC>
<NDCCode>54871-1092-0</NDCCode>
<PackageDescription>20 kg in 1 BOTTLE (54871-1092-0) </PackageDescription>
<NDC11Code>54871-1092-00</NDC11Code>
<ProductNDC>54871-1092</ProductNDC>
<ProductTypeName>BULK INGREDIENT</ProductTypeName>
<NonProprietaryName>Crotamiton</NonProprietaryName>
<DosageFormName>LIQUID</DosageFormName>
<StartMarketingDate>19931204</StartMarketingDate>
<MarketingCategoryName>BULK INGREDIENT</MarketingCategoryName>
<LabelerName>Syn-Tech Chem. & Pharm. Co., Ltd.</LabelerName>
<SubstanceName>CROTAMITON</SubstanceName>
<StrengthNumber>1</StrengthNumber>
<StrengthUnit>kg/kg</StrengthUnit>
<Status>Unfinished</Status>
<LastUpdate>2025-12-18</LastUpdate>
<ListingRecordCertifiedThrough>20261231</ListingRecordCertifiedThrough>
<StartMarketingDatePackage>04-DEC-93</StartMarketingDatePackage>
</NDC>
<NDC>
<NDCCode>54871-1093-0</NDCCode>
<PackageDescription>25 kg in 1 DRUM (54871-1093-0) </PackageDescription>
<NDC11Code>54871-1093-00</NDC11Code>
<ProductNDC>54871-1093</ProductNDC>
<ProductTypeName>BULK INGREDIENT</ProductTypeName>
<NonProprietaryName>Diclofenac Epolamine</NonProprietaryName>
<DosageFormName>POWDER</DosageFormName>
<StartMarketingDate>20130207</StartMarketingDate>
<MarketingCategoryName>BULK INGREDIENT</MarketingCategoryName>
<LabelerName>Syn-Tech Chem. & Pharm. Co., Ltd.</LabelerName>
<SubstanceName>DICLOFENAC EPOLAMINE</SubstanceName>
<StrengthNumber>1</StrengthNumber>
<StrengthUnit>kg/kg</StrengthUnit>
<Status>Unfinished</Status>
<LastUpdate>2025-12-18</LastUpdate>
<ListingRecordCertifiedThrough>20261231</ListingRecordCertifiedThrough>
<StartMarketingDatePackage>07-FEB-13</StartMarketingDatePackage>
</NDC>
<NDC>
<NDCCode>54871-1094-0</NDCCode>
<PackageDescription>1 kg in 1 BAG (54871-1094-0) </PackageDescription>
<NDC11Code>54871-1094-00</NDC11Code>
<ProductNDC>54871-1094</ProductNDC>
<ProductTypeName>BULK INGREDIENT</ProductTypeName>
<NonProprietaryName>Xylazine Hydrochloride</NonProprietaryName>
<DosageFormName>POWDER</DosageFormName>
<StartMarketingDate>20230626</StartMarketingDate>
<MarketingCategoryName>BULK INGREDIENT</MarketingCategoryName>
<LabelerName>Syn-Tech Chem. & Pharm. Co., Ltd.</LabelerName>
<SubstanceName>XYLAZINE HYDROCHLORIDE</SubstanceName>
<StrengthNumber>1</StrengthNumber>
<StrengthUnit>kg/kg</StrengthUnit>
<Status>Unfinished</Status>
<LastUpdate>2025-01-09</LastUpdate>
<ListingRecordCertifiedThrough>20261231</ListingRecordCertifiedThrough>
<StartMarketingDatePackage>26-JUN-23</StartMarketingDatePackage>
</NDC>
<NDC>
<NDCCode>54871-1095-0</NDCCode>
<PackageDescription>500 g in 1 BAG (54871-1095-0)</PackageDescription>
<NDC11Code>54871-1095-00</NDC11Code>
<ProductNDC>54871-1095</ProductNDC>
<ProductTypeName>BULK INGREDIENT</ProductTypeName>
<NonProprietaryName>Epinephrine Base</NonProprietaryName>
<DosageFormName>POWDER</DosageFormName>
<StartMarketingDate>20160609</StartMarketingDate>
<MarketingCategoryName>BULK INGREDIENT</MarketingCategoryName>
<LabelerName>Syn-Tech Chem. & Pharm. Co. LTD.</LabelerName>
<SubstanceName>EPINEPHRINE</SubstanceName>
<StrengthNumber>1</StrengthNumber>
<StrengthUnit>g/g</StrengthUnit>
<Status>Unfinished</Status>
<LastUpdate>2017-12-20</LastUpdate>
<ListingRecordCertifiedThrough>20171231</ListingRecordCertifiedThrough>
</NDC>
<NDC>
<NDCCode>54871-1096-0</NDCCode>
<PackageDescription>500 g in 1 BAG (54871-1096-0)</PackageDescription>
<NDC11Code>54871-1096-00</NDC11Code>
<ProductNDC>54871-1096</ProductNDC>
<ProductTypeName>BULK INGREDIENT</ProductTypeName>
<NonProprietaryName>Epinephrine Bitartrate</NonProprietaryName>
<DosageFormName>POWDER</DosageFormName>
<StartMarketingDate>20160609</StartMarketingDate>
<MarketingCategoryName>BULK INGREDIENT</MarketingCategoryName>
<LabelerName>Syn-Tech Chem. & Pharm. Co. LTD.</LabelerName>
<SubstanceName>EPINEPHRINE BITARTRATE</SubstanceName>
<StrengthNumber>1</StrengthNumber>
<StrengthUnit>g/g</StrengthUnit>
<Status>Unfinished</Status>
<LastUpdate>2017-12-20</LastUpdate>
<ListingRecordCertifiedThrough>20171231</ListingRecordCertifiedThrough>
</NDC>
<NDC>
<NDCCode>54871-1097-0</NDCCode>
<PackageDescription>1 kg in 1 BOTTLE (54871-1097-0)</PackageDescription>
<NDC11Code>54871-1097-00</NDC11Code>
<ProductNDC>54871-1097</ProductNDC>
<ProductTypeName>BULK INGREDIENT</ProductTypeName>
<NonProprietaryName>Epinephrine Bitartrate</NonProprietaryName>
<DosageFormName>POWDER</DosageFormName>
<StartMarketingDate>20160609</StartMarketingDate>
<MarketingCategoryName>BULK INGREDIENT</MarketingCategoryName>
<LabelerName>Syn-Tech Chem. & Pharm. Co. LTD.</LabelerName>
<SubstanceName>EPINEPHRINE BITARTRATE</SubstanceName>
<StrengthNumber>1</StrengthNumber>
<StrengthUnit>kg/kg</StrengthUnit>
<Status>Unfinished</Status>
<LastUpdate>2018-04-13</LastUpdate>
<ListingRecordCertifiedThrough>20191231</ListingRecordCertifiedThrough>
</NDC>
<NDC>
<NDCCode>54871-1098-0</NDCCode>
<PackageDescription>10 kg in 1 DRUM (54871-1098-0) </PackageDescription>
<NDC11Code>54871-1098-00</NDC11Code>
<ProductNDC>54871-1098</ProductNDC>
<ProductTypeName>BULK INGREDIENT</ProductTypeName>
<NonProprietaryName>Riluzole</NonProprietaryName>
<DosageFormName>POWDER</DosageFormName>
<StartMarketingDate>20240101</StartMarketingDate>
<MarketingCategoryName>BULK INGREDIENT</MarketingCategoryName>
<LabelerName>Syn-Tech Chem. & Pharm. Co., Ltd.</LabelerName>
<SubstanceName>RILUZOLE</SubstanceName>
<StrengthNumber>1</StrengthNumber>
<StrengthUnit>kg/kg</StrengthUnit>
<Status>Unfinished</Status>
<LastUpdate>2025-12-18</LastUpdate>
<ListingRecordCertifiedThrough>20261231</ListingRecordCertifiedThrough>
<StartMarketingDatePackage>01-JAN-24</StartMarketingDatePackage>
</NDC>
<NDC>
<NDCCode>54871-1099-0</NDCCode>
<PackageDescription>1 g in 1 BAG (54871-1099-0) </PackageDescription>
<NDC11Code>54871-1099-00</NDC11Code>
<ProductNDC>54871-1099</ProductNDC>
<ProductTypeName>BULK INGREDIENT</ProductTypeName>
<NonProprietaryName>Xylazine Hydrochloride</NonProprietaryName>
<DosageFormName>POWDER</DosageFormName>
<StartMarketingDate>20250106</StartMarketingDate>
<MarketingCategoryName>BULK INGREDIENT</MarketingCategoryName>
<LabelerName>Syn-Tech Chem. & Pharm. Co., Ltd.</LabelerName>
<SubstanceName>XYLAZINE HYDROCHLORIDE</SubstanceName>
<StrengthNumber>1</StrengthNumber>
<StrengthUnit>g/g</StrengthUnit>
<Status>Unfinished</Status>
<LastUpdate>2025-01-09</LastUpdate>
<ListingRecordCertifiedThrough>20261231</ListingRecordCertifiedThrough>
<StartMarketingDatePackage>06-JAN-25</StartMarketingDatePackage>
</NDC>
<NDC>
<NDCCode>0074-4456-04</NDCCode>
<PackageDescription>250 mL in 1 BOTTLE, PLASTIC (0074-4456-04) </PackageDescription>
<NDC11Code>00074-4456-04</NDC11Code>
<ProductNDC>0074-4456</ProductNDC>
<ProductTypeName>HUMAN PRESCRIPTION DRUG</ProductTypeName>
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<Description>ULTANE (sevoflurane), volatile liquid for inhalation, a nonflammable and nonexplosive liquid administered by vaporization, is a halogenated general inhalation anesthetic drug. Sevoflurane is fluoromethyl 2,2,2,-trifluoro-1-(trifluoromethyl) ethyl ether and its structural formula is:. Sevoflurane is nonflammable and nonexplosive as defined by the requirements of International Electrotechnical Commission 601-2-13. Sevoflurane is a clear, colorless, liquid containing no additives. Sevoflurane is not corrosive to stainless steel, brass, aluminum, nickel-plated brass, chrome-plated brass or copper beryllium. Sevoflurane is nonpungent. It is miscible with ethanol, ether, chloroform, and benzene, and it is slightly soluble in water. Sevoflurane is stable when stored under normal room lighting conditions according to instructions. No discernible degradation of sevoflurane occurs in the presence of strong acids or heat. When in contact with alkaline CO2 absorbents (e.g., Baralyme® and to a lesser extent soda lime) within the anesthesia machine, sevoflurane can undergo degradation under certain conditions. Degradation of sevoflurane is minimal, and degradants are either undetectable or present in non-toxic amounts when used as directed with fresh absorbents. Sevoflurane degradation and subsequent degradant formation are enhanced by increasing absorbent temperature increased sevoflurane concentration, decreased fresh gas flow and desiccated CO2 absorbents (especially with potassium hydroxide containing absorbents e.g., Baralyme). Sevoflurane alkaline degradation occurs by two pathways. The first results from the loss of hydrogen fluoride with the formation of pentafluoroisopropenyl fluoromethyl ether, (PIFE, C4H2F6O), also known as Compound A, and trace amounts of pentafluoromethoxy isopropyl fluoromethyl ether, (PMFE, C5H6F6O), also known as Compound B. The second pathway for degradation of sevoflurane, which occurs primarily in the presence of desiccated CO2 absorbents, is discussed later. In the first pathway, the defluorination pathway, the production of degradants in the anesthesia circuit results from the extraction of the acidic proton in the presence of a strong base (KOH and/or NaOH) forming an alkene (Compound A) from sevoflurane similar to formation of 2-bromo-2-chloro-1,1-difluoro ethylene (BCDFE) from halothane. Laboratory simulations have shown that the concentration of these degradants is inversely correlated with the fresh gas flow rate (See Figure 1). Since the reaction of carbon dioxide with absorbents is exothermic, the temperature increase will be determined by quantities of CO2 absorbed, which in turn will depend on fresh gas flow in the anesthesia circle system, metabolic status of the patient, and ventilation. The relationship of temperature produced by varying levels of CO2 and Compound A production is illustrated in the following in vitro simulation where CO2 was added to a circle absorber system. Compound A concentration in a circle absorber system increases as a function of increasing CO2 absorbent temperature and composition (Baralyme producing higher levels than soda lime), increased body temperature, and increased minute ventilation, and decreasing fresh gas flow rates. It has been reported that the concentration of Compound A increases significantly with prolonged dehydration of Baralyme. Compound A exposure in patients also has been shown to rise with increased sevoflurane concentrations and duration of anesthesia. In a clinical study in which sevoflurane was administered to patients under low flow conditions for ≥ 2 hours at flow rates of 1 Liter/minute, Compound A levels were measured in an effort to determine the relationship between MAC hours and Compound A levels produced. The relationship between Compound A levels and sevoflurane exposure are shown in Figure 2a. Compound A has been shown to be nephrotoxic in rats after exposures that have varied in duration from one to three hours. No histopathologic change was seen at a concentration of up to 270 ppm for one hour. Sporadic single cell necrosis of proximal tubule cells has been reported at a concentration of 114 ppm after a 3-hour exposure to Compound A in rats. The LC50 reported at 1 hour is 1050-1090 ppm (male-female) and, at 3 hours, 350-490 ppm (male-female). An experiment was performed comparing sevoflurane plus 75 or 100 ppm Compound A with an active control to evaluate the potential nephrotoxicity of Compound A in non-human primates. A single 8-hour exposure of Sevoflurane in the presence of Compound A produced single-cell renal tubular degeneration and single-cell necrosis in cynomolgus monkeys. These changes are consistent with the increased urinary protein, glucose level and enzymic activity noted on days one and three on the clinical pathology evaluation. This nephrotoxicity produced by Compound A is dose and duration of exposure dependent. At a fresh gas flow rate of 1 L/min, mean maximum concentrations of Compound A in the anesthesia circuit in clinical settings are approximately 20 ppm (0.002%) with soda lime and 30 ppm (0.003%) with Baralyme in adult patients; mean maximum concentrations in pediatric patients with soda lime are about half those found in adults. The highest concentration observed in a single patient with Baralyme was 61 ppm (0.0061%) and 32 ppm (0.0032%) with soda lime. The levels of Compound A at which toxicity occurs in humans is not known. The second pathway for degradation of sevoflurane occurs primarily in the presence of desiccated CO2 absorbents and leads to the dissociation of sevoflurane into hexafluoroisopropanol (HFIP) and formaldehyde. HFIP is inactive, non-genotoxic, rapidly glucuronidated and cleared by the liver. Formaldehyde is present during normal metabolic processes. Upon exposure to a highly desiccated absorbent, formaldehyde can further degrade into methanol and formate. Formate can contribute to the formation of carbon monoxide in the presence of high temperature that can be associated with desiccated Baralyme®. Methanol can react with Compound A to form the methoxy addition product Compound B. Compound B can undergo further HF elimination to form Compounds C, D, and E. Sevoflurane degradants were observed in the respiratory circuit of an experimental anesthesia machine using desiccated CO2 absorbents and maximum sevoflurane concentrations (8%) for extended periods of time (> 2 hours). Concentrations of formaldehyde observed with desiccated soda lime in this experimental anesthesia respiratory circuit were consistent with levels that could potentially result in respiratory irritation. Although KOH containing CO2 absorbents are no longer commercially available, in the laboratory experiments, exposure of sevoflurane to the desiccated KOH containing CO2 absorbent, Baralyme, resulted in the detection of substantially greater degradant levels.</Description>
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<Description>ULTANE (sevoflurane), volatile liquid for inhalation, a nonflammable and nonexplosive liquid administered by vaporization, is a halogenated general inhalation anesthetic drug. Sevoflurane is fluoromethyl 2,2,2,-trifluoro-1-(trifluoromethyl) ethyl ether and its structural formula is:. Sevoflurane is nonflammable and nonexplosive as defined by the requirements of International Electrotechnical Commission 601-2-13. Sevoflurane is a clear, colorless, liquid containing no additives. Sevoflurane is not corrosive to stainless steel, brass, aluminum, nickel-plated brass, chrome-plated brass or copper beryllium. Sevoflurane is nonpungent. It is miscible with ethanol, ether, chloroform, and benzene, and it is slightly soluble in water. Sevoflurane is stable when stored under normal room lighting conditions according to instructions. No discernible degradation of sevoflurane occurs in the presence of strong acids or heat. When in contact with alkaline CO2 absorbents (e.g., Baralyme® and to a lesser extent soda lime) within the anesthesia machine, sevoflurane can undergo degradation under certain conditions. Degradation of sevoflurane is minimal, and degradants are either undetectable or present in non-toxic amounts when used as directed with fresh absorbents. Sevoflurane degradation and subsequent degradant formation are enhanced by increasing absorbent temperature increased sevoflurane concentration, decreased fresh gas flow and desiccated CO2 absorbents (especially with potassium hydroxide containing absorbents e.g., Baralyme). Sevoflurane alkaline degradation occurs by two pathways. The first results from the loss of hydrogen fluoride with the formation of pentafluoroisopropenyl fluoromethyl ether, (PIFE, C4H2F6O), also known as Compound A, and trace amounts of pentafluoromethoxy isopropyl fluoromethyl ether, (PMFE, C5H6F6O), also known as Compound B. The second pathway for degradation of sevoflurane, which occurs primarily in the presence of desiccated CO2 absorbents, is discussed later. In the first pathway, the defluorination pathway, the production of degradants in the anesthesia circuit results from the extraction of the acidic proton in the presence of a strong base (KOH and/or NaOH) forming an alkene (Compound A) from sevoflurane similar to formation of 2-bromo-2-chloro-1,1-difluoro ethylene (BCDFE) from halothane. Laboratory simulations have shown that the concentration of these degradants is inversely correlated with the fresh gas flow rate (See Figure 1). Figure 1. Fresh Gas Flow Rate versus Compound A Levels in a Circle Absorber System. Since the reaction of carbon dioxide with absorbents is exothermic, the temperature increase will be determined by quantities of CO2 absorbed, which in turn will depend on fresh gas flow in the anesthesia circle system, metabolic status of the patient, and ventilation. The relationship of temperature produced by varying levels of CO2 and Compound A production is illustrated in the following in vitro simulation where CO2 was added to a circle absorber system. Figure 2. Carbon Dioxide Flow versus Compound A and Maximum Temperature. Compound A concentration in a circle absorber system increases as a function of increasing CO2 absorbent temperature and composition (Baralyme producing higher levels than soda lime), increased body temperature, and increased minute ventilation, and decreasing fresh gas flow rates. It has been reported that the concentration of Compound A increases significantly with prolonged dehydration of Baralyme. Compound A exposure in patients also has been shown to rise with increased sevoflurane concentrations and duration of anesthesia. In a clinical study in which sevoflurane was administered to patients under low flow conditions for ≥ 2 hours at flow rates of 1 Liter/minute, Compound A levels were measured in an effort to determine the relationship between MAC hours and Compound A levels produced. The relationship between Compound A levels and sevoflurane exposure are shown in Figure 2a. Figure 2a. ppm·hr versus MAC·hr at Flow Rate of 1 L/min. Compound A has been shown to be nephrotoxic in rats after exposures that have varied in duration from one to three hours. No histopathologic change was seen at a concentration of up to 270 ppm for one hour. Sporadic single cell necrosis of proximal tubule cells has been reported at a concentration of 114 ppm after a 3-hour exposure to Compound A in rats. The LC50 reported at 1 hour is 1050-1090 ppm (male-female) and, at 3 hours, 350-490 ppm (male-female). An experiment was performed comparing sevoflurane plus 75 or 100 ppm Compound A with an active control to evaluate the potential nephrotoxicity of Compound A in non-human primates. A single 8-hour exposure of Sevoflurane in the presence of Compound A produced single-cell renal tubular degeneration and single-cell necrosis in cynomolgus monkeys. These changes are consistent with the increased urinary protein, glucose level and enzymic activity noted on days one and three on the clinical pathology evaluation. This nephrotoxicity produced by Compound A is dose and duration of exposure dependent. At a fresh gas flow rate of 1 L/min, mean maximum concentrations of Compound A in the anesthesia circuit in clinical settings are approximately 20 ppm (0.002%) with soda lime and 30 ppm (0.003%) with Baralyme in adult patients; mean maximum concentrations in pediatric patients with soda lime are about half those found in adults. The highest concentration observed in a single patient with Baralyme was 61 ppm (0.0061%) and 32 ppm (0.0032%) with soda lime. The levels of Compound A at which toxicity occurs in humans is not known. The second pathway for degradation of sevoflurane occurs primarily in the presence of desiccated CO2 absorbents and leads to the dissociation of sevoflurane into hexafluoroisopropanol (HFIP) and formaldehyde. HFIP is inactive, non-genotoxic, rapidly glucuronidated and cleared by the liver. Formaldehyde is present during normal metabolic processes. Upon exposure to a highly desiccated absorbent, formaldehyde can further degrade into methanol and formate. Formate can contribute to the formation of carbon monoxide in the presence of high temperature that can be associated with desiccated Baralyme®. Methanol can react with Compound A to form the methoxy addition product Compound B. Compound B can undergo further HF elimination to form Compounds C, D, and E. Sevoflurane degradants were observed in the respiratory circuit of an experimental anesthesia machine using desiccated CO2 absorbents and maximum sevoflurane concentrations (8%) for extended periods of time (> 2 hours). Concentrations of formaldehyde observed with desiccated soda lime in this experimental anesthesia respiratory circuit were consistent with levels that could potentially result in respiratory irritation. Although KOH containing CO2 absorbents are no longer commercially available, in the laboratory experiments, exposure of sevoflurane to the desiccated KOH containing CO2 absorbent, Baralyme, resulted in the detection of substantially greater degradant levels.</Description>
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<Description>Sevoflurane USP, volatile liquid for inhalation, a nonflammable and nonexplosive liquid administered by vaporization, is a halogenated general inhalation anesthetic drug. Sevoflurane is fluoromethyl 2,2,2,-trifluoro-1-(trifluoromethyl) ethyl ether and its structural formula is. Sevoflurane is nonflammable and nonexplosive as defined by the requirements of International Electrotechnical Commission 601-2-13. Sevoflurane is a clear, colorless, liquid containing no additives. Sevoflurane is not corrosive to stainless steel, brass, aluminum, nickel-plated brass, chrome-plated brass or copper beryllium. Sevoflurane is nonpungent. It is miscible with ethanol, ether, chloroform, and benzene, and it is slightly soluble in water. Sevoflurane is stable when stored under normal room lighting conditions according to instructions. No discernible degradation of sevoflurane occurs in the presence of strong acids or heat. When in contact with alkaline CO2 absorbents (e.g., Baralyme® and to a lesser extent soda lime) within the anesthesia machine, sevoflurane can undergo degradation under certain conditions. Degradation of sevoflurane is minimal, and degradants are either undetectable or present in non-toxic amounts when used as directed with fresh absorbents. Sevoflurane degradation and subsequent degradant formation are enhanced by increasing absorbent temperature increased sevoflurane concentration, decreased fresh gas flow and desiccated CO2 absorbents (especially with potassium hydroxide containing absorbents e.g., Baralyme). Sevoflurane alkaline degradation occurs by two pathways. The first results from the loss of hydrogen fluoride with the formation of pentafluoroisopropenyl fluoromethyl ether, (PIFE, C4H2F6O), also known as Compound A, and trace amounts of pentafluoromethoxy isopropyl fluoromethyl ether, (PMFE, C5H6F6O), also known as Compound B. The second pathway for degradation of sevoflurane, which occurs primarily in the presence of desiccated CO2 absorbents, is discussed later. In the first pathway, the defluorination pathway, the production of degradants in the anesthesia circuit results from the extraction of the acidic proton in the presence of a strong base (KOH and/or NaOH) forming an alkene (Compound A) from sevoflurane similar to formation of 2-bromo-2-chloro-1,1-difluoro ethylene (BCDFE) from halothane. Laboratory simulations have shown that the concentration of these degradants is inversely correlated with the fresh gas flow rate (See Figure 1). Figure 1. Fresh Gas Flow Rate versus Compound A Levels in a Circle Absorber System. Since the reaction of carbon dioxide with absorbents is exothermic, the temperature increase will be determined by quantities of CO2 absorbed, which in turn will depend on fresh gas flow in the anesthesia circle system, metabolic status of the patient, and ventilation. The relationship of temperature produced by varying levels of CO2 and Compound A production is illustrated in the following in vitro simulation where CO2 was added to a circle absorber system. Figure 2. Carbon Dioxide Flow versus Compound A and Maximum Temperature. Compound A concentration in a circle absorber system increases as a function of increasing CO2 absorbent temperature and composition (Baralyme producing higher levels than soda lime), increased body temperature, and increased minute ventilation, and decreasing fresh gas flow rates. It has been reported that the concentration of Compound A increases significantly with prolonged dehydration of Baralyme. Compound A exposure in patients also has been shown to rise with increased sevoflurane concentrations and duration of anesthesia. In a clinical study in which sevoflurane was administered to patients under low flow conditions for ≥ 2 hours at flow rates of 1 Liter/minute, Compound A levels were measured in an effort to determine the relationship between MAC hours and Compound A levels produced. The relationship between Compound A levels and sevoflurane exposure are shown in Figure 2a. Figure 2a. ppm·hr versus MAC·hr at Flow Rate of 1 L/min. Compound A has been shown to be nephrotoxic in rats after exposures that have varied in duration from one to three hours. No histopathologic change was seen at a concentration of up to 270 ppm for one hour. Sporadic single cell necrosis of proximal tubule cells has been reported at a concentration of 114 ppm after a 3-hour exposure to Compound A in rats. The LC50 reported at 1 hour is 1050-1090 ppm (male-female) and, at 3 hours, 350-490 ppm (male-female). An experiment was performed comparing sevoflurane plus 75 or 100 ppm Compound A with an active control to evaluate the potential nephrotoxicity of Compound A in non-human primates. A single 8-hour exposure of Sevoflurane in the presence of Compound A produced single-cell renal tubular degeneration and single-cell necrosis in cynomolgus monkeys. These changes are consistent with the increased urinary protein, glucose level and enzymic activity noted on days one and three on the clinical pathology evaluation. This nephrotoxicity produced by Compound A is dose and duration of exposure dependent. At a fresh gas flow rate of 1 L/min, mean maximum concentrations of Compound A in the anesthesia circuit in clinical settings are approximately 20 ppm (0.002%) with soda lime and 30 ppm (0.003%) with Baralyme in adult patients; mean maximum concentrations in pediatric patients with soda lime are about half those found in adults. The highest concentration observed in a single patient with Baralyme was 61 ppm (0.0061%) and 32 ppm (0.0032%) with soda lime. The levels of Compound A at which toxicity occurs in humans is not known. The second pathway for degradation of sevoflurane occurs primarily in the presence of desiccated CO2 absorbents and leads to the dissociation of sevoflurane into hexafluoroisopropanol (HFIP) and formaldehyde. HFIP is inactive, non-genotoxic, rapidly glucuronidated and cleared by the liver. Formaldehyde is present during normal metabolic processes. Upon exposure to a highly desiccated absorbent, formaldehyde can further degrade into methanol and formate. Formate can contribute to the formation of carbon monoxide in the presence of high temperature that can be associated with desiccated Baralyme®. Methanol can react with Compound A to form the methoxy addition product Compound B. Compound B can undergo further HF elimination to form Compounds C, D, and E. Sevoflurane degradants were observed in the respiratory circuit of an experimental anesthesia machine using desiccated CO2 absorbents and maximum sevoflurane concentrations (8%) for extended periods of time (> 2 hours). Concentrations of formaldehyde observed with desiccated soda lime in this experimental anesthesia respiratory circuit were consistent with levels that could potentially result in respiratory irritation. Although KOH containing CO2 absorbents are no longer commercially available, in the laboratory experiments, exposure of sevoflurane to the desiccated KOH containing CO2 absorbent, Baralyme, resulted in the detection of substantially greater degradant levels.</Description>
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<Description>Sevoflurane, USP, volatile liquid for inhalation, a nonflammable and nonexplosive liquid administered by vaporization, is a halogenated general inhalation anesthetic drug. Sevoflurane, USP is fluoromethyl 2,2,2,-trifluoro-1-(trifluoromethyl) ethyl ether and its structural formula is. Sevoflurane, USP is nonflammable and nonexplosive as defined by the requirements of International Electrotechnical Commission 601-2-13. Sevoflurane, USP is a clear, colorless, liquid containing no additives. Sevoflurane, USP is not corrosive to stainless steel, brass, aluminum, nickel-plated brass, chrome-plated brass or copper beryllium. Sevoflurane, USP is nonpungent. It is miscible with ethanol, ether, chloroform, and benzene, and it is slightly soluble in water. Sevoflurane, USP is stable when stored under normal room lighting conditions according to instructions. No discernible degradation of sevoflurane, USP occurs in the presence of strong acids or heat. When in contact with alkaline CO2 absorbents (e.g., Baralyme® and to a lesser extent soda lime) within the anesthesia machine, Sevoflurane, USP can undergo degradation under certain conditions. Degradation of sevoflurane, USP is minimal, and degradants are either undetectable or present in non-toxic amounts when used as directed with fresh absorbents. Sevoflurane, USP degradation and subsequent degradant formation are enhanced by increasing absorbent temperature increased sevoflurane, USP concentration, decreased fresh gas flow and desiccated CO2 absorbents (especially with potassium hydroxide containing absorbents e.g., Baralyme). Sevoflurane, USP alkaline degradation occurs by two pathways. The first results from the loss of hydrogen fluoride with the formation of pentafluoroisopropenyl fluoromethyl ether, (PIFE, C4H2F6O), also known as Compound A, and trace amounts of pentafluoromethoxy isopropyl fluoromethyl ether, (PMFE, C5H6F6O), also known as Compound B. The second pathway for degradation of sevoflurane, USP, which occurs primarily in the presence of desiccated CO2 absorbents, is discussed later. In the first pathway, the defluorination pathway, the production of degradants in the anesthesia circuit results from the extraction of the acidic proton in the presence of a strong base (KOH and/or NaOH) forming an alkene (Compound A) from sevoflurane, USP similar to formation of 2-bromo-2-chloro-1,1-difluoro ethylene (BCDFE) from halothane. Laboratory simulations have shown that the concentration of these degradants is inversely correlated with the fresh gas flow rate (See Figure 1). Since the reaction of carbon dioxide with absorbents is exothermic, the temperature increase will be determined by quantities of CO2 absorbed, which in turn will depend on fresh gas flow in the anesthesia circle system, metabolic status of the patient, and ventilation. The relationship of temperature produced by varying levels of CO2 and Compound A production is illustrated in the following in vitro simulation where CO2 was added to a circle absorber system. Compound A concentration in a circle absorber system increases as a function of increasing CO2 absorbent temperature and composition (Baralyme producing higher levels than soda lime), increased body temperature, and increased minute ventilation, and decreasing fresh gas flow rates. It has been reported that the concentration of Compound A increases significantly with prolonged dehydration of Baralyme. Compound A exposure in patients also has been shown to rise with increased sevoflurane, USP concentrations and duration of anesthesia. In a clinical study in which sevoflurane, USP was administered to patients under low flow conditions for ≥ 2 hours at flow rates of 1 Liter/minute, Compound A levels were measured in an effort to determine the relationship between MAC hours and Compound A levels produced. The relationship between Compound A levels and sevoflurane, USP exposure are shown in Figure 2a. Compound A has been shown to be nephrotoxic in rats after exposures that have varied in duration from one to three hours. No histopathologic change was seen at a concentration of up to 270 ppm for one hour. Sporadic single cell necrosis of proximal tubule cells has been reported at a concentration of 114 ppm after a 3-hour exposure to Compound A in rats. The LC50 reported at 1 hour is 1050-1090 ppm (male-female) and, at 3 hours, 350-490 ppm (male-female). An experiment was performed comparing sevoflurane, USP plus 75 or 100 ppm Compound A with an active control to evaluate the potential nephrotoxicity of Compound A in non-human primates. A single 8-hour exposure of Sevoflurane, USP in the presence of Compound A produced single-cell renal tubular degeneration and single-cell necrosis in cynomolgus monkeys. These changes are consistent with the increased urinary protein, glucose level and enzymic activity noted on days one and three on the clinical pathology evaluation. This nephrotoxicity produced by Compound A is dose and duration of exposure dependent. At a fresh gas flow rate of 1 L/min, mean maximum concentrations of Compound A in the anesthesia circuit in clinical settings are approximately 20 ppm (0.002%) with soda lime and 30 ppm (0.003%) with Baralyme in adult patients; mean maximum concentrations in pediatric patients with soda lime are about half those found in adults. The highest concentration observed in a single patient with Baralyme was 61 ppm (0.0061%) and 32 ppm (0.0032%) with soda lime. The levels of Compound A at which toxicity occurs in humans is not known. The second pathway for degradation of sevoflurane, USP occurs primarily in the presence of desiccated CO2 absorbents and leads to the dissociation of sevoflurane, USP into hexafluoroisopropanol (HFIP) and formaldehyde. HFIP is inactive, non-genotoxic, rapidly glucuronidated and cleared by the liver. Formaldehyde is present during normal metabolic processes. Upon exposure to a highly desiccated absorbent, formaldehyde can further degrade into methanol and formate. Formate can contribute to the formation of carbon monoxide in the presence of high temperature that can be associated with desiccated Baralyme®. Methanol can react with Compound A to form the methoxy addition product Compound B. Compound B can undergo further HF elimination to form Compounds C, D, and E. Sevoflurane, USP degradants were observed in the respiratory circuit of an experimental anesthesia machine using desiccated CO2 absorbents and maximum sevoflurane, USP concentrations (8%) for extended periods of time (˃ 2 hours). Concentrations of formaldehyde observed with desiccated soda lime in this experimental anesthesia respiratory circuit were consistent with levels that could potentially result in respiratory irritation. Although KOH containing CO2 absorbents are no longer commercially available, in the laboratory experiments, exposure of sevoflurane, USP to the desiccated KOH containing CO2 absorbent, Baralyme, resulted in the detection of substantially greater degradant levels.</Description>
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<Description>Sevoflurane, USP, volatile liquid for inhalation, a nonflammable and nonexplosive liquid administered by vaporization, is a halogenated general inhalation anesthetic drug. Sevoflurane, USP is fluoromethyl 2,2,2,-trifluoro-1-(trifluoromethyl) ethyl ether and its structural formula is. Sevoflurane, USP is nonflammable and nonexplosive as defined by the requirements of International Electrotechnical Commission 601-2-13. Sevoflurane, USP is a clear, colorless, liquid containing no additives. Sevoflurane, USP is not corrosive to stainless steel, brass, aluminum, nickel-plated brass, chrome-plated brass or copper beryllium. Sevoflurane, USP is nonpungent. It is miscible with ethanol, ether, chloroform, and benzene, and it is slightly soluble in water. Sevoflurane, USP is stable when stored under normal room lighting conditions according to instructions. No discernible degradation of sevoflurane, USP occurs in the presence of strong acids or heat. When in contact with alkaline CO2 absorbents (e.g., Baralyme® and to a lesser extent soda lime) within the anesthesia machine, Sevoflurane, USP can undergo degradation under certain conditions. Degradation of sevoflurane, USP is minimal, and degradants are either undetectable or present in non-toxic amounts when used as directed with fresh absorbents. Sevoflurane, USP degradation and subsequent degradant formation are enhanced by increasing absorbent temperature increased sevoflurane, USP concentration, decreased fresh gas flow and desiccated CO2 absorbents (especially with potassium hydroxide containing absorbents e.g., Baralyme). Sevoflurane, USP alkaline degradation occurs by two pathways. The first results from the loss of hydrogen fluoride with the formation of pentafluoroisopropenyl fluoromethyl ether, (PIFE, C4H2F6O), also known as Compound A, and trace amounts of pentafluoromethoxy isopropyl fluoromethyl ether, (PMFE, C5H6F6O), also known as Compound B. The second pathway for degradation of sevoflurane, USP, which occurs primarily in the presence of desiccated CO2 absorbents, is discussed later. In the first pathway, the defluorination pathway, the production of degradants in the anesthesia circuit results from the extraction of the acidic proton in the presence of a strong base (KOH and/or NaOH) forming an alkene (Compound A) from sevoflurane, USP similar to formation of 2-bromo-2-chloro-1,1-difluoro ethylene (BCDFE) from halothane. Laboratory simulations have shown that the concentration of these degradants is inversely correlated with the fresh gas flow rate (See Figure 1). Since the reaction of carbon dioxide with absorbents is exothermic, the temperature increase will be determined by quantities of CO2 absorbed, which in turn will depend on fresh gas flow in the anesthesia circle system, metabolic status of the patient, and ventilation. The relationship of temperature produced by varying levels of CO2 and Compound A production is illustrated in the following in vitro simulation where CO2 was added to a circle absorber system. Compound A concentration in a circle absorber system increases as a function of increasing CO2 absorbent temperature and composition (Baralyme producing higher levels than soda lime), increased body temperature, and increased minute ventilation, and decreasing fresh gas flow rates. It has been reported that the concentration of Compound A increases significantly with prolonged dehydration of Baralyme. Compound A exposure in patients also has been shown to rise with increased sevoflurane, USP concentrations and duration of anesthesia. In a clinical study in which sevoflurane, USP was administered to patients under low flow conditions for ≥ 2 hours at flow rates of 1 Liter/minute, Compound A levels were measured in an effort to determine the relationship between MAC hours and Compound A levels produced. The relationship between Compound A levels and sevoflurane, USP exposure are shown in Figure 2a. Compound A has been shown to be nephrotoxic in rats after exposures that have varied in duration from one to three hours. No histopathologic change was seen at a concentration of up to 270 ppm for one hour. Sporadic single cell necrosis of proximal tubule cells has been reported at a concentration of 114 ppm after a 3-hour exposure to Compound A in rats. The LC50 reported at 1 hour is 1050-1090 ppm (male-female) and, at 3 hours, 350-490 ppm (male-female). An experiment was performed comparing sevoflurane, USP plus 75 or 100 ppm Compound A with an active control to evaluate the potential nephrotoxicity of Compound A in non-human primates. A single 8-hour exposure of Sevoflurane, USP in the presence of Compound A produced single-cell renal tubular degeneration and single-cell necrosis in cynomolgus monkeys. These changes are consistent with the increased urinary protein, glucose level and enzymic activity noted on days one and three on the clinical pathology evaluation. This nephrotoxicity produced by Compound A is dose and duration of exposure dependent. At a fresh gas flow rate of 1 L/min, mean maximum concentrations of Compound A in the anesthesia circuit in clinical settings are approximately 20 ppm (0.002%) with soda lime and 30 ppm (0.003%) with Baralyme in adult patients; mean maximum concentrations in pediatric patients with soda lime are about half those found in adults. The highest concentration observed in a single patient with Baralyme was 61 ppm (0.0061%) and 32 ppm (0.0032%) with soda lime. The levels of Compound A at which toxicity occurs in humans is not known. The second pathway for degradation of sevoflurane, USP occurs primarily in the presence of desiccated CO2 absorbents and leads to the dissociation of sevoflurane, USP into hexafluoroisopropanol (HFIP) and formaldehyde. HFIP is inactive, non-genotoxic, rapidly glucuronidated and cleared by the liver. Formaldehyde is present during normal metabolic processes. Upon exposure to a highly desiccated absorbent, formaldehyde can further degrade into methanol and formate. Formate can contribute to the formation of carbon monoxide in the presence of high temperature that can be associated with desiccated Baralyme®. Methanol can react with Compound A to form the methoxy addition product Compound B. Compound B can undergo further HF elimination to form Compounds C, D, and E. Sevoflurane, USP degradants were observed in the respiratory circuit of an experimental anesthesia machine using desiccated CO2 absorbents and maximum sevoflurane, USP concentrations (8%) for extended periods of time (> 2 hours). Concentrations of formaldehyde observed with desiccated soda lime in this experimental anesthesia respiratory circuit were consistent with levels that could potentially result in respiratory irritation. Although KOH containing CO2 absorbents are no longer commercially available, in the laboratory experiments, exposure of sevoflurane, USP to the desiccated KOH containing CO2 absorbent, Baralyme, resulted in the detection of substantially greater degradant levels.</Description>
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<Description>Sevoflurane, USP, volatile liquid for inhalation, a nonflammable and nonexplosive liquid administered by vaporization, is a halogenated general inhalation anesthetic drug. Sevoflurane, USP is fluoromethyl 2,2,2,-trifluoro-1-(trifluoromethyl) ethyl ether and its structural formula is. Sevoflurane, USP is nonflammable and nonexplosive as defined by the requirements of International Electrotechnical Commission 601-2-13. Sevoflurane, USP is a clear, colorless, liquid containing no additives. Sevoflurane, USP is not corrosive to stainless steel, brass, aluminum, nickel-plated brass, chrome-plated brass or copper beryllium. Sevoflurane, USP is nonpungent. It is miscible with ethanol, ether, chloroform, and benzene, and it is slightly soluble in water. Sevoflurane, USP is stable when stored under normal room lighting conditions according to instructions. No discernible degradation of sevoflurane, USP occurs in the presence of strong acids or heat. When in contact with alkaline CO2 absorbents (e.g., Baralyme® and to a lesser extent soda lime) within the anesthesia machine, Sevoflurane, USP can undergo degradation under certain conditions. Degradation of sevoflurane, USP is minimal, and degradants are either undetectable or present in non-toxic amounts when used as directed with fresh absorbents. Sevoflurane, USP degradation and subsequent degradant formation are enhanced by increasing absorbent temperature increased sevoflurane, USP concentration, decreased fresh gas flow and desiccated CO2 absorbents (especially with potassium hydroxide containing absorbents e.g., Baralyme). Sevoflurane, USP alkaline degradation occurs by two pathways. The first results from the loss of hydrogen fluoride with the formation of pentafluoroisopropenyl fluoromethyl ether, (PIFE, C4H2F6O), also known as Compound A, and trace amounts of pentafluoromethoxy isopropyl fluoromethyl ether, (PMFE, C5H6F6O), also known as Compound B. The second pathway for degradation of sevoflurane, USP, which occurs primarily in the presence of desiccated CO2 absorbents, is discussed later. In the first pathway, the defluorination pathway, the production of degradants in the anesthesia circuit results from the extraction of the acidic proton in the presence of a strong base (KOH and/or NaOH) forming an alkene (Compound A) from sevoflurane, USP similar to formation of 2-bromo-2-chloro-1,1-difluoro ethylene (BCDFE) from halothane. Laboratory simulations have shown that the concentration of these degradants is inversely correlated with the fresh gas flow rate (See Figure 1). Since the reaction of carbon dioxide with absorbents is exothermic, the temperature increase will be determined by quantities of CO2 absorbed, which in turn will depend on fresh gas flow in the anesthesia circle system, metabolic status of the patient, and ventilation. The relationship of temperature produced by varying levels of CO2 and Compound A production is illustrated in the following in vitro simulation where CO2 was added to a circle absorber system. Compound A concentration in a circle absorber system increases as a function of increasing CO2 absorbent temperature and composition (Baralyme producing higher levels than soda lime), increased body temperature, and increased minute ventilation, and decreasing fresh gas flow rates. It has been reported that the concentration of Compound A increases significantly with prolonged dehydration of Baralyme. Compound A exposure in patients also has been shown to rise with increased sevoflurane, USP concentrations and duration of anesthesia. In a clinical study in which sevoflurane, USP was administered to patients under low flow conditions for ≥ 2 hours at flow rates of 1 Liter/minute, Compound A levels were measured in an effort to determine the relationship between MAC hours and Compound A levels produced. The relationship between Compound A levels and sevoflurane, USP exposure are shown in Figure 2a. Compound A has been shown to be nephrotoxic in rats after exposures that have varied in duration from one to three hours. No histopathologic change was seen at a concentration of up to 270 ppm for one hour. Sporadic single cell necrosis of proximal tubule cells has been reported at a concentration of 114 ppm after a 3-hour exposure to Compound A in rats. The LC50 reported at 1 hour is 1050-1090 ppm (male-female) and, at 3 hours, 350-490 ppm (male-female). An experiment was performed comparing sevoflurane, USP plus 75 or 100 ppm Compound A with an active control to evaluate the potential nephrotoxicity of Compound A in non-human primates. A single 8-hour exposure of Sevoflurane, USP in the presence of Compound A produced single-cell renal tubular degeneration and single-cell necrosis in cynomolgus monkeys. These changes are consistent with the increased urinary protein, glucose level and enzymic activity noted on days one and three on the clinical pathology evaluation. This nephrotoxicity produced by Compound A is dose and duration of exposure dependent. At a fresh gas flow rate of 1 L/min, mean maximum concentrations of Compound A in the anesthesia circuit in clinical settings are approximately 20 ppm (0.002%) with soda lime and 30 ppm (0.003%) with Baralyme in adult patients; mean maximum concentrations in pediatric patients with soda lime are about half those found in adults. The highest concentration observed in a single patient with Baralyme was 61 ppm (0.0061%) and 32 ppm (0.0032%) with soda lime. The levels of Compound A at which toxicity occurs in humans is not known. The second pathway for degradation of sevoflurane, USP occurs primarily in the presence of desiccated CO2 absorbents and leads to the dissociation of sevoflurane, USP into hexafluoroisopropanol (HFIP) and formaldehyde. HFIP is inactive, non-genotoxic, rapidly glucuronidated and cleared by the liver. Formaldehyde is present during normal metabolic processes. Upon exposure to a highly desiccated absorbent, formaldehyde can further degrade into methanol and formate. Formate can contribute to the formation of carbon monoxide in the presence of high temperature that can be associated with desiccated Baralyme®. Methanol can react with Compound A to form the methoxy addition product Compound B. Compound B can undergo further HF elimination to form Compounds C, D, and E. Sevoflurane, USP degradants were observed in the respiratory circuit of an experimental anesthesia machine using desiccated CO2 absorbents and maximum sevoflurane, USP concentrations (8%) for extended periods of time (˃ 2 hours). Concentrations of formaldehyde observed with desiccated soda lime in this experimental anesthesia respiratory circuit were consistent with levels that could potentially result in respiratory irritation. Although KOH containing CO2 absorbents are no longer commercially available, in the laboratory experiments, exposure of sevoflurane, USP to the desiccated KOH containing CO2 absorbent, Baralyme, resulted in the detection of substantially greater degradant levels.</Description>
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<Description>Sevoflurane, USP, volatile liquid for inhalation, a nonflammable and nonexplosive liquid administered by vaporization, is a halogenated general inhalation anesthetic drug. Sevoflurane, USP is fluoromethyl 2,2,2,-trifluoro-1-(trifluoromethyl) ethyl ether and its structural formula is. Sevoflurane, USP is nonflammable and nonexplosive as defined by the requirements of International Electrotechnical Commission 601-2-13. Sevoflurane, USP is a clear, colorless, liquid containing no additives. Sevoflurane, USP is not corrosive to stainless steel, brass, aluminum, nickel-plated brass, chrome-plated brass or copper beryllium. Sevoflurane, USP is nonpungent. It is miscible with ethanol, ether, chloroform, and benzene, and it is slightly soluble in water. Sevoflurane, USP is stable when stored under normal room lighting conditions according to instructions. No discernible degradation of sevoflurane, USP occurs in the presence of strong acids or heat. When in contact with alkaline CO2 absorbents (e.g., Baralyme® and to a lesser extent soda lime) within the anesthesia machine, Sevoflurane, USP can undergo degradation under certain conditions. Degradation of sevoflurane, USP is minimal, and degradants are either undetectable or present in non-toxic amounts when used as directed with fresh absorbents. Sevoflurane, USP degradation and subsequent degradant formation are enhanced by increasing absorbent temperature increased sevoflurane, USP concentration, decreased fresh gas flow and desiccated CO2 absorbents (especially with potassium hydroxide containing absorbents e.g., Baralyme). Sevoflurane, USP alkaline degradation occurs by two pathways. The first results from the loss of hydrogen fluoride with the formation of pentafluoroisopropenyl fluoromethyl ether, (PIFE, C4H2F6O), also known as Compound A, and trace amounts of pentafluoromethoxy isopropyl fluoromethyl ether, (PMFE, C5H6F6O), also known as Compound B. The second pathway for degradation of sevoflurane, USP, which occurs primarily in the presence of desiccated CO2 absorbents, is discussed later. In the first pathway, the defluorination pathway, the production of degradants in the anesthesia circuit results from the extraction of the acidic proton in the presence of a strong base (KOH and/or NaOH) forming an alkene (Compound A) from sevoflurane, USP similar to formation of 2-bromo-2-chloro-1,1-difluoro ethylene (BCDFE) from halothane. Laboratory simulations have shown that the concentration of these degradants is inversely correlated with the fresh gas flow rate (See Figure 1). Since the reaction of carbon dioxide with absorbents is exothermic, the temperature increase will be determined by quantities of CO2 absorbed, which in turn will depend on fresh gas flow in the anesthesia circle system, metabolic status of the patient, and ventilation. The relationship of temperature produced by varying levels of CO2 and Compound A production is illustrated in the following in vitro simulation where CO2 was added to a circle absorber system. Compound A concentration in a circle absorber system increases as a function of increasing CO2 absorbent temperature and composition (Baralyme producing higher levels than soda lime), increased body temperature, and increased minute ventilation, and decreasing fresh gas flow rates. It has been reported that the concentration of Compound A increases significantly with prolonged dehydration of Baralyme. Compound A exposure in patients also has been shown to rise with increased sevoflurane, USP concentrations and duration of anesthesia. In a clinical study in which sevoflurane, USP was administered to patients under low flow conditions for ≥ 2 hours at flow rates of 1 Liter/minute, Compound A levels were measured in an effort to determine the relationship between MAC hours and Compound A levels produced. The relationship between Compound A levels and sevoflurane, USP exposure are shown in Figure 2a. Compound A has been shown to be nephrotoxic in rats after exposures that have varied in duration from one to three hours. No histopathologic change was seen at a concentration of up to 270 ppm for one hour. Sporadic single cell necrosis of proximal tubule cells has been reported at a concentration of 114 ppm after a 3-hour exposure to Compound A in rats. The LC50 reported at 1 hour is 1050-1090 ppm (male-female) and, at 3 hours, 350-490 ppm (male-female). An experiment was performed comparing sevoflurane, USP plus 75 or 100 ppm Compound A with an active control to evaluate the potential nephrotoxicity of Compound A in non-human primates. A single 8-hour exposure of Sevoflurane, USP in the presence of Compound A produced single-cell renal tubular degeneration and single-cell necrosis in cynomolgus monkeys. These changes are consistent with the increased urinary protein, glucose level and enzymic activity noted on days one and three on the clinical pathology evaluation. This nephrotoxicity produced by Compound A is dose and duration of exposure dependent. At a fresh gas flow rate of 1 L/min, mean maximum concentrations of Compound A in the anesthesia circuit in clinical settings are approximately 20 ppm (0.002%) with soda lime and 30 ppm (0.003%) with Baralyme in adult patients; mean maximum concentrations in pediatric patients with soda lime are about half those found in adults. The highest concentration observed in a single patient with Baralyme was 61 ppm (0.0061%) and 32 ppm (0.0032%) with soda lime. The levels of Compound A at which toxicity occurs in humans is not known. The second pathway for degradation of sevoflurane, USP occurs primarily in the presence of desiccated CO2 absorbents and leads to the dissociation of sevoflurane, USP into hexafluoroisopropanol (HFIP) and formaldehyde. HFIP is inactive, non-genotoxic, rapidly glucuronidated and cleared by the liver. Formaldehyde is present during normal metabolic processes. Upon exposure to a highly desiccated absorbent, formaldehyde can further degrade into methanol and formate. Formate can contribute to the formation of carbon monoxide in the presence of high temperature that can be associated with desiccated Baralyme®. Methanol can react with Compound A to form the methoxy addition product Compound B. Compound B can undergo further HF elimination to form Compounds C, D, and E. 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<Description>Sevoflurane, volatile liquid for inhalation, a nonflammable and nonexplosive liquid administered by vaporization, is a halogenated general inhalation anesthetic drug. Sevoflurane is fluoromethyl 2,2,2,-trifluoro-1-(trifluoromethyl) ethyl ether and its structural formula is. Sevoflurane is nonflammable and nonexplosive as defined by the requirements of International Electrotechnical Commission 601-2-13. Sevoflurane is a clear, colorless, liquid containing no additives. Sevoflurane is not corrosive to stainless steel, brass, aluminum, nickel-plated brass, chrome-plated brass or copper beryllium. Sevoflurane is nonpungent. It is miscible with ethanol, ether, chloroform, and benzene, and it is slightly soluble in water. Sevoflurane is stable when stored under normal room lighting conditions according to instructions. No discernible degradation of sevoflurane occurs in the presence of strong acids or heat. When in contact with alkaline CO2 absorbents (e.g Baralyme® and to a lesser extent soda lime) within the anesthesia machine, sevoflurane can undergo degradation under certain conditions. Degradation of sevoflurane is minimal, and degradants are either undetectable or present in non-toxic amounts when used as directed with fresh absorbents. Sevoflurane degradation and subsequent degradant formation are enhanced by increasing absorbent temperature increased sevoflurane concentration, decreased fresh gas flow and desiccated CO2 absorbents (especially with potassium hydroxide containing absorbents e.g.Baralyme). Sevoflurane alkaline degradation occurs by two pathways. The first results from the loss of hydrogen fluoride with the formation of pentafluoroisopropenyl fluoromethyl ether, (PIFE, C4H2F6O), also known as Compound A, and trace amounts of pentafluoromethoxy isopropyl fluoromethyl ether, (PMFE, C5H6F6O), also known as Compound B. The second pathway for degradation of sevoflurane, which occurs primarily in the presence of desiccated CO2 absorbents, is discussed later. In the first pathway, the defluorination pathway, the production of degradants in the anesthesia circuit results from the extraction of the acidic proton in the presence of a strong base (KOH and/or NaOH) forming an alkene (Compound A) from sevoflurane similar to formation of 2-bromo-2-chloro-1, 1-difluoro ethylene (BCDFE) from halothane. Laboratory simulations have shown that the concentration of these degradants is inversely correlated with the fresh gas flow rate (See Figure 1). Since the reaction of carbon dioxide with absorbents is exothermic, the temperature increase will be determined by quantities of CO2 absorbed, which in turn will depend on fresh gas flow in the anesthesia circle system, metabolic status of the patient, and ventilation. The relationship of temperature produced by varying levels of CO2 and Compound A production is illustrated in the following in vitro simulation where CO2 was added to a circle absorber system. Compound A concentration in a circle absorber system increases as a function of increasing CO2 absorbent temperature and composition (Baralyme producing higher levels than soda lime), increased body temperature, and increased minute ventilation, and decreasing fresh gas flow rates. It has been reported that the concentration of Compound A increases significantly with prolonged dehydration of Baralyme. Compound A exposure in patients also has been shown to rise with increased sevoflurane concentrations and duration of anesthesia. In a clinical study in which sevoflurane was administered to patients under low flow conditions for ≥2 hours at flow rates of 1 Liter/minute, Compound A levels were measured in an effort to determine the relationship between MAC hours and Compound A levels produced. The relationship between Compound A levels and sevoflurane exposure are shown in Figure 2a. Compound A has been shown to be nephrotoxic in rats after exposures that have varied in duration from one to three hours. No histopathologic change was seen at a concentration of up to 270 ppm for one hour. Sporadic single cell necrosis of proximal tubule cells has been reported at a concentration of 114 ppm after a 3-hour exposure to Compound A in rats. The LC50 reported at 1 hour is 1050 to 1090 ppm (male-female) and, at 3 hours, 350 to 490 ppm (male-female). An experiment was performed comparing sevoflurane plus 75 or 100 ppm Compound A with an active control to evaluate the potential nephrotoxicity of Compound A in non-human primates. A single 8-hour exposure of Sevoflurane in the presence of Compound A produced single-cell renal tubular degeneration and single-cell necrosis in cynomolgus monkeys. These changes are consistent with the increased urinary protein, glucose level and enzymic activity noted on days one and three on the clinical pathology evaluation. This nephrotoxicity produced by Compound A is dose and duration of exposure dependent. At a fresh gas flow rate of 1 L/min, mean maximum concentrations of Compound A in the anesthesia circuit in clinical settings are approximately 20 ppm (0.002%) with soda lime and 30 ppm (0.003%) with Baralyme in adult patients; mean maximum concentrations in pediatric patients with soda lime are about half those found in adults. The highest concentration observed in a single patient with Baralyme was 61 ppm (0.0061%) and 32 ppm (0.0032%) with soda lime. The levels of Compound A at which toxicity occurs in humans is not known. The second pathway for degradation of sevoflurane occurs primarily in the presence of desiccated CO2 absorbents and leads to the dissociation of sevoflurane into hexafluoroisopropanol (HFIP) and formaldehyde. HFIP is inactive, non-genotoxic, rapidly glucuronidated and cleared by the liver. Formaldehyde is present during normal metabolic processes. Upon exposure to a highly desiccated absorbent, formaldehyde can further degrade into methanol and formate. Formate can contribute to the formation of carbon monoxide in the presence of high temperature that can be associated with desiccated Baralyme®. Methanol can react with Compound A to form the methoxy addition product Compound B. Compound B can undergo further HF elimination to form Compounds C, D, and E. Sevoflurane degradants were observed in the respiratory circuit of an experimental anesthesia machine using desiccated CO2 absorbents and maximum sevoflurane concentrations (8%) for extended periods of time (> 2 hours). Concentrations of formaldehyde observed with desiccated soda lime in this experimental anesthesia respiratory circuit were consistent with levels that could potentially result in respiratory irritation. Although KOH containing CO2 absorbents are no longer commercially available, in the laboratory experiments, exposure of sevoflurane to the desiccated KOH containing CO2 absorbent, Baralyme, resulted in the detection of substantially greater degradant levels.</Description>
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