英文别名(8S,9S,10R,14S)-13-ethyl-17-hydroxy-11-methylidene-1,2,6,7,8,9,10,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one; (8S,9S,10R,14S)-13-Ethyl-17-hydroxy-11-methylene-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3(2H)-one; 13-ethyl-17-hydroxy-11-methylene-gon-4-en-3-one; 18-methyl-11-methylene-Estra-4-ene-3-one-17-ol; (+)-13β-Ethyl-17β-hydroxy-11-methylenegon-4-en-3-one; Etonogestrel Impurity 10; (+)-13beta-Ethyl-17beta-hydroxy-11-methylenegon-4-en-3-one; (8S,9S,10R,14S)-13-Ethyl-17-hydroxy-11-methylidene-1,2,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-3H-cyclopenta[a]phenanthren-3-one 
