(5Z,15S,16S)-15-Hydroxy-16-methyl-9-oxoprost-5-en-13-yn-1-oic acid methyl ester 11-Deoxy-13,14-didehydro-16(S)-methylprostaglandin E2 methyl ester 89648-76-0 FCE-20700 Fce 20700 Prost-5-en-13-yn-1-oic acid, 15-hydroxy-16-methyl-9-oxo-, methyl ester, (5Z,15S,16S)-