Used as a protected amino acid derivative in peptide synthesis, enabling selective coupling reactions without side-chain interference. The tert-butoxycarbonyl (Boc) group provides stability under various reaction conditions and can be removed under mild acidic conditions, making it ideal for stepwise solid-phase peptide synthesis. Also employed in the preparation of pharmaceutical intermediates where controlled nitrogen reactivity is required. Its solubility in common organic solvents facilitates use in multi-step organic transformations, particularly in the development of bioactive molecules and heterocyclic compounds.