5-Heptenoic acid, 7-(2-(5-cyclohexyl-3-hydroxy-1-pentynyl)-3,5-dihydroxycyclopentyl)-, methyl ester, (1R-(1alpha(Z),2beta(S*),3alpha,5alpha))- 74176-31-1 Alfaprostol Alfaprostol [USAN:BAN:INN] Alfaprostolum [INN-Latin] EINECS 277-746-0 K 11941 Methyl (Z)-7-((1R,2S,3R,5S)-2-((3S)-5-cyclohexyl-3-hydroxy-1-pentynyl)-3,5-dihydroxycyclopentyl)-5-heptenoate Ro 22-9000