(+-)-Methyl (Z)-7-((1R,2R,3R)-2-((E)-(4RS)-4-butyl-4-hydroxy-1,5-hexadienyl)-3-hydroxy-5-oxocyclopentyl)-5-heptenoate 73647-73-1 93522-21-5 CL 115,347 Prosta-5,13-dien-1-oic acid, 16-ethenyl-11,16-dihydroxy-9-oxo-, methyl ester, (5Z,11alpha,13E)-(+-)- VIPROSTOL Viprostol [USAN:BAN:INN] Viprostolum [Latin]