Synonyms : (15S)-Hydroxy-11 alpha, 9 alpha-(epoxymethano)prosta-5Z, 13E-dienoic Acid, (15S)hydroxy-9alpha, 11alpha-(epoxymethano)prosta-5, 13-dienoic acid, 11 alpha, 9 alpha-Epoxymethano PGH2, 9, 11-Dideoxy-11 alpha, 9 alpha-epoxymethanoprostaglandin F2 alpha, U-44619