Used primarily as a protected amino acid derivative in peptide synthesis. The Boc (tert-butoxycarbonyl) group acts as a protecting group for the amine functionality, allowing selective reaction at the carboxylic acid end during coupling steps. The methyl substitution at the 2-position provides steric control, influencing the stereochemistry and reactivity in peptide chain elongation. Commonly employed in the synthesis of complex peptides and peptidomimetics where controlled deprotection and coupling are required. Its stability under basic conditions and clean removal under acidic conditions make it suitable for solid-phase and solution-phase peptide synthesis. Also used in the preparation of pharmaceutical intermediates, particularly in the development of enzyme inhibitors and bioactive molecules.