The molecule is a prostaglandin carboxylic acid anion that is the conjugate base of 20-hydroxyprostaglandin A1, obtained by deprotonation of the carboxy group; major species at pH 7.3. It derives from a prostaglandin A1(1-). It is a conjugate base of a 20-hydroxyprostaglandin A1.
7-[(1R,2S)-2-[(E,3S)-3,8-dihydroxyoct-1-enyl]-5-oxocyclopent-3-en-1-yl]heptanoate