Synonyms: (5Z,13E,15S)-9α,11α,15-Trihydroxy-15-methylprosta-5,13-dien-1-oic acid 1,15-lactone;(15S)-15-Methyl-pgf2-alpha 1,15-lactone;(15S)-15-Methyl-prostaglandin F2-alpha 1,15-lactone;Brn 5597537;Prosta-5,13-dien-1-oic acid, 9,11,15-trihydroxy-15-methyl-, lambda-lactone, (5Z,9-alpha,11-alpha,13E,15S)