Used as a chiral derivatizing agent in asymmetric synthesis, particularly for the stereocontrolled formation of disulfide-containing peptides. Its Boc-protected amino groups allow selective deprotection and coupling in peptide chain elongation, while the disulfide bridge serves as a reversible linker in prodrug design or as a structural motif in conformationally constrained peptides. Commonly employed in the development of biologically active molecules where stereochemistry and redox-sensitive bonds are critical, such as in enzyme inhibitors or peptide-based therapeutics. Also utilized in bioconjugation strategies where controlled dimerization or oxidative folding is required.