17-phenyl trinor PGD2 is primarily utilized in research settings to study its effects on various biological processes, particularly those related to inflammation and allergic responses. It serves as a valuable tool for investigating the role of prostaglandins in cellular signaling pathways. Researchers use this compound to explore its interaction with prostaglandin receptors, which can provide insights into the development of therapeutic agents for conditions like asthma, allergic rhinitis, and other inflammatory diseases. Additionally, it aids in understanding the mechanisms underlying vasodilation, bronchoconstriction, and immune modulation, contributing to advancements in pharmacology and medicine.