The molecule is a prostaglandin carboxylic acid anion that is the conjugate base of 20-hydroxyprostaglandin E1, obtained by deprotonation of the carboxy group; major species at pH 7.3. It derives from a prostaglandin E1(1-). It is a conjugate base of a 20-hydroxyprostaglandin E1.
7-[(1R,2R,3R)-2-[(E,3S)-3,8-dihydroxyoct-1-enyl]-3-hydroxy-5-oxocyclopentyl]heptanoate