Synonyms: 6,9-DIOXO-11ALPHA,15S-DIHYDROXY-PROST-13E-EN-1-OIC ACID;6-KETO PROSTAGLANDIN E1;7-[(1R,2R,3R)-3-hydroxy-2-[(E,3S)-3-hydroxyoct-1-enyl]-5-oxocyclopentyl]-6-oxoheptanoic acid;[11α,13E,15S]-11,15-Dihydroxy-6,9-dioxoprosta-13-en-1-oic acid;(13E,15S)-11α,15-Dihydroxy-6,9-dioxoprost-13-en-1-oic acid;6-Keto-PGE1