英文别名Cyproterone Acetate EP Impurity E; 1β,2β-Dihydro-17-hydroxy-3'H-cyclopropa[1,2]pregna-1,4-diene-3,6,20-trione Acetate; Cyproterone Acetate Impurity 5; 3'H-Cyclopropa[1,2]pregna-1,4-diene-3,6,20-trione, 1β,2β-dihydro-17-hydroxy-, acetate; (2aR,3aS,3bS,3cS,5aS,6R,8aS,8bR)-6-Acetyl-3b,5a-dimethyl-2,10-dioxo-2,2a,3,3a,3b,3c,4,5,5a,6,7,8,8a,8b,9,10-hexadecahydrocyclopenta[a]cyclopropa[g]phenanthren-6-yl acetate; 1a,2a-Methylene-3,6,20-trioxopregna-4-en-17a-yl Acetate; 3,6,20-Trioxo-1β,2β-dihydro-3'H-cyclopropa[1,2]pregna-1,4-dien-17-yl Acetate; CYPROTERONE ACETATE IMPURITY E [EP IMPURITY] 
