Prostaglandin F2α 1,9-lactone (PGF2α 1,9-lactone) is primarily used in research and development within the pharmaceutical and biomedical fields. It serves as a key intermediate in the synthesis of various prostaglandin analogs, which are crucial for studying and developing treatments for conditions like glaucoma, hypertension, and reproductive health disorders. Its unique lactone structure allows for targeted modifications, enabling the creation of more stable and effective therapeutic agents. Additionally, it is employed in biochemical studies to investigate the role of prostaglandins in inflammation, pain, and cellular signaling pathways.