Used in peptide synthesis as a protected amino acid derivative, enabling selective coupling reactions without side-chain interference. The Boc (tert-butoxycarbonyl) group provides temporary N-terminal protection, while the alpha-methyl substitution enhances metabolic stability and influences conformational rigidity in the resulting peptide. Commonly employed in the preparation of enzyme inhibitors, peptidomimetics, and bioactive compounds where steric hindrance and chiral control are important. Suitable for solid-phase and solution-phase synthesis strategies.