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 antidepressant compounds due to its ability to mimic natural amino acids while providing improved pharmacokinetic properties. Also utilized in medicinal chemistry for structure-activity relationship studies where stereochemistry and fluorination play critical roles in target binding.