Used as a chiral building block in the synthesis of biologically active compounds, particularly in pharmaceutical development. Its fluorinated pyrrolidine structure enhances metabolic stability and bioavailability in drug candidates. Commonly employed in the preparation of protease inhibitors and other enzyme-targeted therapeutics. The sulfonyl chloride group allows for easy attachment to amines or alcohols, enabling efficient incorporation into larger molecules. Valued in medicinal chemistry for enabling stereoselective synthesis, helping maintain desired spatial orientation in final drug structures.