Used in peptide synthesis as a protected amino acid building block, particularly in the development of pharmaceuticals and bioactive compounds. The Boc (tert-butoxycarbonyl) group provides temporary protection for the amino functionality, allowing selective reaction at the carboxylic acid site during coupling steps. Its aromatic structure with methyl substituents enhances steric and electronic properties, making it valuable in designing peptidomimetics and optimizing drug candidates for improved stability and receptor binding. Commonly employed in solid-phase and solution-phase synthesis of complex organic molecules.