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 alcohol and amine functionalities make it suitable for peptide-like coupling reactions and heterocyclic modifications. Commonly employed in asymmetric synthesis to introduce stereochemically defined structures in drug candidates, especially in central nervous system agents and enzyme inhibitors. The tert-butyl carbamate (Boc) protection allows for selective deprotection under mild acidic conditions, enabling stepwise construction of complex molecules in multistep organic syntheses.