(Z)-7-[(1S,2R,3R)-3-hydroxy-5-oxo-2-[(E)-3-oxooct-1-enyl]cyclopentyl]hept-5-enoic acid

8-iso-15-keto Prostaglandin E₂ (8-iso-15-keto PGE₂) is an isoprostane, one member of a large family of biomarkers produced by the free radical peroxidative degradation of membrane lipids.¹ 8-iso-15-keto PGE₂ is the theoretical first metabolite of 8-iso PGE₂ via the 15-hydroxy PGDH pathway. While a number of potent biological activities have been attributed to 8-iso PGE₂,² there are no published reports at this time regarding its metabolism.

ChEBI: 8-iso-15-keto-PGE2 is a prostanoid.

1. Morrow, J.D., Hill, K.E., Burk, R.F., et al. A series of prostaglandin F2-like compounds are produced in vivo in humans by a non-cyclooxygenase, free radical-catalyzed mechanism Proc. Natl. Acad. Sci. USA 87(23),9383-9387(1990).
2. Longmire, A.W., Roberts, L.J., and Morrow, J.D. Actions of the E₂-isoprostane, 8-iso-PGE₂, on the platelet thromboxane/endoperoxide receptor in humans and rats: Additional evidence for the existence of a unique isoprostane receptor Prostaglandins 48,247-256(1994).