Used as a key building block in peptide synthesis, particularly in the development of pharmaceuticals and bioactive peptides. Its protected amine group allows for selective coupling reactions, enabling precise control during stepwise assembly of complex peptide structures. Commonly employed in the synthesis of enzyme inhibitors, receptor ligands, and cyclic peptides due to the extended aliphatic chain that can influence conformation and stability. Also utilized in medicinal chemistry for spacer or linker design in prodrugs and targeted drug delivery systems.