(16R,S)-Methyl-18,18,19,19-tetradehydro-6a-carbaprostaglandin I(sub 2) (E)-(3aS,4R,5R,6aS)-Hexahydro-5-hydroxy-4-((E)-(3S,4RS)-3-hydroxy-4-methyl-1-octen-6-ynyl)-delta(sup 2(1H),delta)-pentalenevaleric acid (E)-5-(3aS,4R,5R,6aS)-5-Hydroxy-4((E)-(3S,4RS)-3-hydroxy-4-methyl-1-octen-6-inyl)perhydropentalen-2-yliden)valeriansaeure 73873-87-7 78919-13-8 Ciloprost ILOPROST Iloprost [BAN:INN] Iloprostum [Latin] Pentanoic acid, 5-(hexahydro-5-hydroxy-4-(3-hydroxy-4-methyl-1-octen-6-ynyl)-2(1H)-pentalenylidene)- Ventavis ZK 36374