Used in pharmaceutical synthesis as a protected amino acid building block, particularly in the development of peptide-based drugs. The BOC (tert-butoxycarbonyl) group provides temporary protection of the amine functionality, allowing selective reactions at other sites. The cyclopropyl side chain imparts metabolic stability and conformational rigidity, making it valuable in drug design for enhancing potency and bioavailability. Commonly employed in the preparation of enzyme inhibitors and bioactive molecules targeting central nervous system disorders and metabolic diseases.