15-Cyclohexyl-omega-pentanor-7-thiaprostaglandin E1 83009-96-5 Cpt-PGE1 Hexanoic acid, 6-((2-(3-cyclohexyl-3-hydroxy-1-propenyl)-3-hydroxy-5-oxocyclopentyl)thio)-, methyl ester, (1R-(1alpha,2beta(1E,3S*),3alpha))-