Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) requiring high enantiomeric purity. Its protected amine and defined stereochemistry make it valuable in constructing complex molecules for central nervous system agents, kinase inhibitors, and other bioactive compounds. Commonly employed in medicinal chemistry for structure-activity relationship (SAR) studies due to the stability and selective reactivity of the Boc-protected amine group.