Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of peptidomimetics and beta-amino acid derivatives. Its protected amine and carboxylic acid functionalities allow for selective coupling reactions in multi-step organic syntheses. Commonly employed in the preparation of enzyme inhibitors and bioactive molecules where stereochemistry plays a critical role in activity. The tert-butoxycarbonyl (Boc) group provides stability during reactions and can be easily removed under mild acidic conditions, making it ideal for solid-phase and solution-phase peptide synthesis.