This chemical is primarily used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS) methods. It serves as a protected form of glutamine, where the Boc (tert-butyloxycarbonyl) group protects the amino group, and the Xan (xanthyl) group protects the side chain. This protection strategy allows for selective deprotection during the synthesis process, enabling the controlled assembly of peptide chains. It is especially useful in the synthesis of complex peptides where precise control over the sequence is required. Additionally, it finds applications in the development of pharmaceuticals, bioactive peptides, and research involving peptide-based compounds.