Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) requiring stereochemical control. Its protected amine and secondary amine functionality make it valuable in peptide coupling and heterocycle formation. Commonly employed in the preparation of protease inhibitors, kinase inhibitors, and other bioactive molecules in medicinal chemistry. The Cbz group allows for selective deprotection under mild conditions, enabling stepwise assembly of complex molecules. Widely utilized in research and industrial drug discovery programs for constructing nitrogen-containing heterocycles with high enantiomeric purity.