Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of peptide-based drugs. Its protected amine and carboxylate groups allow for selective coupling reactions, making it valuable in solid-phase peptide synthesis. Commonly employed in the preparation of protease inhibitors and other bioactive molecules where stereochemistry is critical. The Boc-protected amino group ensures stability during reactions and can be easily deprotected under mild acidic conditions, enabling efficient stepwise assembly of complex peptides.