The chemical Misoprostol acid has a designated molecular formula of C21H36O5 and a molecular weight of 368.514 g/mol. Synonyms may include: 15-Deoxy-16-hydroxy-16-methylprostaglandin E1, (11alpha,13E)-(+)-11,16-Dihydroxy-16-methyl-9-oxoprost-13-en-1-oic acid, SC 30695, UNII-12Z0SU967A (ChemID).