103335-41-7

Finasteride EP Impurity B Finasteride impurity B (EP) (4aR,4bS,6aS,7S,9aS,9bS,11aR) Finasteride Methyl Ester Analog Dutasteride Methyl Ester Impurity Methyl 3-Oxo-4-aza-5alpha-androst-1 Finasteride Impurity 2（Finasteride EP Impurity B） methyl 3-oxo-4-aza-5α-androst-1-ene-17β-carboxylate Finasteride Impurity B (Dutasteride Ester Impurity) Dutasteride Ester Impurity (Finasteride EP Impurity B) Finasteride EP Impurity B (Dutasteride Ester Impurity) methyl-3- oxo-4-aza-5-alfa-androst-1ene-17-beta-carboxylate METHYL 3-OXO-4-AZA-5-ALPHA-ANDROST-1-ENE-17-BETA-CARBOXYLATE 3-Oxo-4-aza-5α-αndrost-1-ene-17β-carboxylic Acid Methyl Ester METHYL 4-AZA-5ALPHA-ANDROSTA-1-EN-3-ONE-17BETA-CARBOXAMIDE(M4) Dutasteride Methyl Ester Analog (Finasteride Methyl Ester Analog) (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 (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-t (4aR,4bS,6aS,7S,9aS,9bS,11aR)-2,4a,4b,5,6,6a,7,8,9,9a,9b,10,11,11a-Tetradecahydro-4a,6a-diMethyl-2-oxo- -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 Finasteride EP Impurity B/ Finasteride Related Compund D (Dutasteride Methyl Ester Analog/Finasteride Methyl Ester Analog) 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 (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 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)-