(8S,13S,14S,17S)-17-acetyl-13,17-dimethyl-1,2,6,7,8,11,12,14,15,16-decahydrocyclopenta[a]phenanthren-3-one (8S,13S,14S,17S)-17-ethanoyl-13,17-dimethyl-1,2,6,7,8,11,12,14,15,16-decahydrocyclopenta[a]phenanthren-3-one 17alpha-Methyl-19-demethylpregna-4,9-diene-3,20-dione 19-Norpregna-4,9-diene-3,20-dione, 17-methyl- (8CI)(9CI) Demegestona [INN-Spanish] Demegestone [DCF:INN] Demegestonum [INN-Latin] EINECS 233-320-6 NSC 118189