(5Z,11alpha,13E,15S)-11,15-Dihydroxy-9-oxoprosta-5,13,19-trien-1-oic acid 11,15-Dihydroxy-9-oxoprosta-5,13,19-trien-1-oic acid (5Z,11alpha,13E,15S)- 111219-93-3 19,20-Dehydroprostaglandin E2 Prosta-5,13,19-trien-1-oic acid, 11,15-dihydroxy-9-oxo-, (5Z,11alpha,13E,15S)-