Used as a chiral building block in the synthesis of complex peptides and peptidomimetics, particularly in the development of enzyme inhibitors and pharmaceutical intermediates. Its protected amino functional groups and free carboxyl group allow selective deprotection and coupling in solid-phase or solution-phase peptide synthesis. The stereochemistry at the chiral center ensures high enantioselectivity in biologically active molecules, making it valuable in medicinal chemistry for designing drugs targeting proteases and other stereosensitive biological pathways.