1,1-Dihomo-8-keto-PGF1alpha 1,1-Dihomo-8-ketoprostaglandin F1alpha 1alpha,1beta-Dihomo-8-oxoprostaglandin F1alpha 71310-81-1 Prost-6-ene-20-carboxylic acid, 5,9,11-trihydroxy-1-methyl-4-oxo-, (5S,6E,9beta,11beta)-