15-Methoxyprostaglandin F2alpha 40834-96-6 O-15-Methylprostaglandin F2alpha ether Pgf2alpha 15-methyl ether Prosta-5,13-dien-1-oic acid, 9,11-dihydroxy-15-methoxy-, (5Z,9alpha,11alpha,13E,15S)- Prostaglandin 15-methyl F2alpha Prostaglandin F2-alpha 15-methyl ether Prostaglandin F2alpha 15-methyl ether