11-Methoxyprostaglandin F2alpha 79743-26-3 O-11-Methylprostaglandin F2alpha ether Pgf2alpha 11-methyl ether Prosta-5,13-dien-1-oic acid, 9,15-dihydroxy-11-methoxy-, (5Z,9alpha,11alpha,13E,15S)- Prostaglandin F2alpha 11-methyl ether