Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of biologically active compounds where stereochemistry plays a critical role. Its protected amine and ester functionalities make it suitable for peptide-like structures and asymmetric synthesis. Commonly employed in the preparation of intermediates for drugs targeting central nervous system disorders, antibiotics, and enzyme inhibitors. The tert-butyl ester group allows for selective deprotection under mild acidic conditions, enabling stepwise construction of complex molecules without affecting other sensitive functional groups.