Used in the synthesis of pharmaceutical intermediates, particularly in the development of protease inhibitors and other bioactive molecules. Its chiral center and functional groups make it valuable for constructing complex organic molecules with high stereoselectivity. Commonly employed in peptide mimetic design, where the cyano-phenyl moiety contributes to binding affinity and metabolic stability. The Boc-protected amine allows for controlled deprotection and coupling in multi-step syntheses, especially in the preparation of drug candidates targeting neurological disorders and cancer.