The chemical Iloprost has a designated molecular formula of C22H32O4 and a molecular weight of 360.494 g/mol. Synonyms may include: Ciloprost, Iloprostum [Latin], (16R,S)-Methyl-18,18,19,19-tetradehydro-6a-carbaprostaglandin I(sub 2), ZK 36374, (E)-5-(3aS,4R,5R,6aS)-5-Hydroxy-4((E)-(3S,4RS)-3-hydroxy-4-methyl-1-octen-6-inyl)perhydropentalen-2-yliden)valeriansaeure, Ventavis, Iloprostum, UNII-JED5K35YGL, BAY Q6256 (ChemID). Iloprost has been assigned a MeSH pharmacological action of: Platelet Aggregation Inhibitor.