Used in peptide synthesis as a protected derivative of D-asparagine, enabling selective coupling and preventing side reactions at both the alpha-amino and side chain functional groups. The Boc group protects the alpha-amine, while the trityl group selectively shields the side chain amide of D-asparagine, allowing for controlled solid-phase or solution-phase peptide chain elongation. Commonly employed in the production of complex peptides and glycopeptides where side chain protection is critical for high yield and purity. Also utilized in the synthesis of labeled peptides and pharmaceutical intermediates due to its stability under various reaction conditions and ease of deprotection.