(5Z,11alpha,13E,15S)-11,15-Dihydroxy-9-oxoprosta-5,13-dien-1-oic aid ethyl ester 51924-48-2 Ethyldinoprost Prosta-5,13-dien-1-oic aid, 11,15-dihydroxy-9-oxo-, ethyl ester, (5Z,11alpha,13E,15S)-