8-iso-15-keto Prostaglandin F2α is a stable metabolite of the isoprostane 8-iso-PGF2α, commonly used in medical and scientific research as a biomarker for oxidative stress and lipid peroxidation in the body. It is involved in studies of inflammatory processes and the mechanisms of various diseases, such as cardiovascular, respiratory, and neurological disorders. Additionally, it is utilized in analyzing biochemical reactions related to prostaglandins and cellular changes under different conditions.