Used primarily in peptide synthesis, this compound serves as a protected form of D-arginine. The Boc (tert-butoxycarbonyl) group safeguards the amino group, while the Mtr (4-methoxy-2,3,6-trimethylbenzenesulfonyl) group protects the guanidine side chain. This dual protection allows selective deprotection during peptide chain assembly, ensuring precise and controlled synthesis. It is particularly valuable in creating peptides with specific sequences, especially in pharmaceutical research and development, where modified arginine residues are often required. Its application extends to the production of bioactive peptides, enzyme inhibitors, and other therapeutic agents.