Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of enzyme inhibitors and central nervous system agents. Its fluorinated pyrrolidine structure enhances metabolic stability and bioavailability in drug candidates. Commonly employed in the preparation of antiviral and antidiabetic compounds due to its ability to mimic natural amino acids and interact selectively with biological targets. The hydrochloride salt form improves solubility and crystallinity, facilitating purification and formulation in medicinal chemistry applications.