Used as a chiral intermediate in the synthesis of pharmaceuticals, particularly in the development of protease inhibitors and other bioactive molecules. Its protected amino and ester functionalities allow selective reactions in multi-step organic syntheses. Commonly employed in asymmetric synthesis to introduce stereochemical control, especially in the preparation of peptide mimetics and enzyme inhibitors. The tert-butoxycarbonyl (Boc) group enables easy deprotection under mild acidic conditions, making it suitable for solid-phase and solution-phase peptide coupling strategies.