15(S)-15-methyl Prostaglandin D2 is a stable analog of Prostaglandin D2, primarily used in research to study the role of prostaglandins in various physiological and pathological processes. It allows scientists to investigate its effects on inflammation, allergic responses, and immune system regulation. This compound is particularly valuable in understanding the mechanisms of diseases such as asthma, where Prostaglandin D2 plays a significant role in airway constriction and inflammation. Additionally, it is utilized in pharmacological studies to explore potential therapeutic targets for conditions involving prostaglandin pathways. Its stability and specificity make it a useful tool in both in vitro and in vivo experimental models.