16-Methyl-16-methoxy-PGE2 16-Methyl-16-methoxyprostaglandin E2 61408-68-2 L 14224 L-14224 Prosta-5,13-dien-1-oic acid, 11,15-dihydroxy-16-methoxy-16-methyl-9-oxo-, methyl ester, (5Z,11alpha,13E,15R,16R)-