31935-05-4 9,11-Dihydroxy-15-oxo-2,3,4,5,20-pentanor-19-carboxyprostanoic acid 9,11-Dppcpa 9alpha,11alpha-Dihydroxy-15-oxo-2,3,4,5,20-pentanor-19-carboxyprostanoic acid Cyclopentaneoctanoic acid, 2-(2-carboxyethyl)-3,5-dihydroxy-epsilon-oxo- PGF-M