Used in pharmaceutical synthesis as a chiral building block for the preparation of biologically active compounds. Its protected amine group allows for selective reactions in multi-step syntheses, particularly in the development of drugs targeting central nervous system disorders. Commonly employed in the production of protease inhibitors and receptor agonists due to its stereochemical purity and structural compatibility with complex molecules. Also utilized in the synthesis of kinase inhibitors and other therapeutic agents requiring high enantiomeric excess.