Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the preparation of peptide-based drugs. Its protected amine and ester functional groups allow for selective reactions in multi-step organic syntheses. Commonly employed in the development 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, making it ideal for solid-phase peptide synthesis and medicinal chemistry applications.