The molecule is a prostaglandin I that consists of prostaglandin I1 carrying an additional hydroxy substituent at position 19. It has a role as a human xenobiotic metabolite. It is a prostaglandins I, a secondary allylic alcohol, a triol and a hydroxy monocarboxylic acid. It derives from a prostaglandin I2. It is a conjugate acid of a 19-hydroxyprostaglandin I2(1-).
(5Z)-5-[(3aR,4R,5R,6aS)-4-[(E,3S)-3,7-dihydroxyoct-1-enyl]-5-hydroxy-3,3a,4,5,6,6a-hexahydrocyclopenta[b]furan-2-ylidene]pentanoic acid