5-Oxa-17-phenyl-18,19,20-trinor PGF1alpha methyl ester 5-Oxa-17-phenyl-18,19,20-trinor prostaglandin F1-alpha, methyl ester 5-Oxa-17-phenyl-18,19,20-trinor prostaglandin F1alpha methyl ester 55444-88-7 Butanoic acid, 4-(2-(3,5-dihydroxy-2-(3-hydroxy-5-phenyl-1-pentenyl)cyclopentyl)ethoxy)-, methyl ester, (1R-(1alpha,2beta(1E,3S*),3alpha,5alpha))- Opt-pgf1 ME