13,14-dihydro-15-keto Prostaglandin D2 is primarily used in research settings to study its role in inflammation and immune responses. It is a metabolite of Prostaglandin D2 and is often investigated for its potential effects on allergic reactions, asthma, and other inflammatory conditions. Researchers utilize this compound to understand its interaction with specific receptors and its impact on cellular signaling pathways. Additionally, it is explored for its potential therapeutic applications in modulating immune responses and managing inflammatory diseases.