Used as a key intermediate in the synthesis of pharmaceuticals and biologically active compounds, particularly in the development of nitrogen-containing heterocycles. Its protected amine functionality allows selective reactions in multi-step organic syntheses. Commonly employed in the preparation of protease inhibitors, kinase inhibitors, and other drug candidates where controlled amine reactivity is required. Also utilized in the construction of amino acid derivatives and peptide mimetics due to its stability under various reaction conditions. The Boc-protected amine group enables easy deprotection without affecting other sensitive functional groups, making it valuable in solid-phase and solution-phase peptide synthesis.