Used in peptide synthesis as a protected amino acid derivative, particularly in the construction of complex peptides where side-chain protection is required. The xanthyl (Xan) group provides orthogonal protection for the asparagine side chain amide, preventing unwanted side reactions during coupling steps. The Boc (tert-butoxycarbonyl) group protects the alpha-amino function, allowing for stepwise assembly of peptide chains. This compound is especially valuable in solid-phase and solution-phase peptide synthesis for producing pharmaceuticals, biochemical probes, and research reagents. Its use enhances purity and yield by minimizing aggregation and improving solubility in organic solvents.