7-((1R,2R,3R)-3-hydroxy-2-((E)-4-hydroxy-4-methyloct-1-en-1-yl)-5-oxocyclopentyl)heptanoic acid; (11α,13E)-11,16-Dihydroxy-16-methyl-9-oxo-prost-13-en-1-oic Acid; Misoprostol Free Acid; (+/-)-15-Deoxy-(16RS)-16-hydroxy-16-methylprogestaglandin E1,Misoprostol Metabolite