Synonyms: 4-Azaandrost-1-ene-17-carboxylicacid, 3-oxo-, methyl ester, (5a,17b)-; 17b-(Methoxycarbonyl)-4-aza-5a-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-(4aa,4bb,6aa,7a,9ab,9ba,11ab)]-; 3-Oxo-4-aza-5a-androst-1-en-17b-carboxylic acid methyl ester; Methyl 3-oxo-4-aza-5a-androst-1-ene-17b-carboxylate