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| Product | Description | |
|---|---|---|
| Finasteride EP Impurity B | An intermediate in the synthesis of Finasteride. Finasteride is a 4-azasteroid analog of testosterone that competitively blocks type II 5α-reductase activity with 100-fold greater affinity than for the type I enzyme. Synonyms: Dutasteride Ester Impurity; 3-Oxo-4-aza-5α-αndrost-1-ene-17β-carboxylic Acid Methyl Ester; Methyl 3-Oxo-4-aza-5α-androst-1-ene-17β-carboxylate. Grades: > 95%. CAS No. 103335-41-7. Molecular formula: C20H29NO3. Mole weight: 331.46. |  |
| Finasteride EP Impurity B | Finasteride EP Impurity B. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: Dutasteride Ester Impurity; (4aR,4bS,6aS,7S,9aS,9bS,11aR)-methyl 4a,6a-dimethyl-2-oxo-2,4a,4b,5,6,6a,7,8,9,9a,9b,10,11,11a-tetradecahydro-1H-indeno[5,4-f]quinoline-7-carboxylate. CAS No. 103335-41-7. Molecular formula: C20H29NO3. Mole weight: 331.45. Catalog: APB103335417. |  |
| 3-Oxo-4-aza-5Alpha-Alphandrost-1-ene-17Beta-carboxylic Acid Methyl Ester | 3-Oxo-4-aza-5Alpha-Alphandrost-1-ene-17Beta-carboxylic Acid Methyl Ester. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: Delta-1-Aza Ester of Finasteride, Finasteride Imp. B (EP), Methyl 3-oxo-4-aza-5alpha-androst-1-ene-17beta-carboxylate, 3-Oxo-4-aza-5alpha-androst-1-en-17beta-carboxylic acid methyl ester, 1H-Indeno[5,4-f]quinoline-7-carboxylic acid, 2,4a,4b,5,6,6a,7,8,9,9a,9b,10,11,11a-tetradecahydro-4a,6a-dimethyl-2-oxo-, methyl ester, (4aR,4bS,6aS,7S,9aS,9bS,11aR)-,Methyl 3-Oxo-4-aza-5alpha-androst-1-ene-17beta-carboxylate, 17beta-(Methoxycarbonyl)-4-aza-5alpha-androst-1-en-3-one, 1H-Indeno[5,4-f]quinoline-7-carboxylic acid, 1,4a,4b,5,6,6a,7,8,9,9a,9b,10,11,11a-tetradecahydro-4a,6a-dimethyl-2-oxo-, methyl ester, [4aR-(4aalpha,4bbeta,6aalpha,7alpha,9abeta,9balpha,11abeta)]-, 4-Azaandrost-1-ene-17-carboxylic acid, 3-oxo-, methyl ester, (5alpha,17beta)-. CAS No. 103335-41-7. IUPAC Name: methyl (1S,3aS,3bS,5aR,9aR,9bS,11aS)-9a,11a-dimethyl-7-oxo-1,2,3,3a,3b,4,5,5a,6,9b,10,11-dodecahydroindeno[5,4-f]quinoline-1-carboxylate. Molecular formula: C20H29NO3. Mole weight: 331.45. Catalog: APS103335417. SMILES: COC(=O)[C@H]1CC[C@H]2[C@@H]3CC[C@H]4NC(=O)C=C[C@]4(C)[C@H]3CC[C@]12C. Format: Neat. | |
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