Used as a key intermediate in the synthesis of antiviral and antidiabetic pharmaceuticals. Its stereochemistry and functional groups enable selective reactions in multi-step drug manufacturing, particularly in building chiral molecules for protease inhibitors. The fluorinated pyrrolidine structure enhances metabolic stability and bioavailability in final drug compounds. Commonly employed in research and development of fluorine-containing active pharmaceutical ingredients (APIs) where precise 3D orientation is critical for biological activity.