Used as a chiral building block in the synthesis of complex peptides and peptidomimetics. Its protected amino and carboxyl functional groups allow for selective deprotection and coupling in solid-phase or solution-phase peptide synthesis. Commonly employed in the preparation of biologically active molecules, including pharmaceutical intermediates and enzyme inhibitors. The stereochemistry at the alpha carbon ensures high enantioselectivity in final products, making it valuable in asymmetric synthesis. Also utilized in the development of protease substrates and diagnostic reagents.