Used as a key intermediate in the synthesis of peptides and peptidomimetic drugs, particularly those incorporating 2,3-diaminopropanoic acid residues where stereochemistry is critical. The Cbz protecting group on the side-chain β-amino function allows selective coupling via the free α-amino and carboxyl groups in solid-phase and solution-phase peptide synthesis. Commonly employed in the production of pharmaceuticals such as protease inhibitors and other therapeutic agents requiring chiral purity. The benzyl carbamate (Cbz) protecting group provides stability during reactions and can be removed under mild hydrogenolytic conditions, making it ideal for multi-step syntheses.