Used in peptide synthesis and pharmaceutical research, this compound serves as a protected form of guanidine, enabling selective reactions without interference from reactive side groups. Its main application lies in the development of arginine-containing peptides, where the Boc (tert-butoxycarbonyl) group provides temporary protection to the guanidine functionality during coupling steps. This allows for controlled deprotection under mild acidic conditions, preserving the integrity of the peptide chain. It is also employed in the synthesis of enzyme inhibitors and bioactive molecules where precise manipulation of nitrogen-containing functional groups is required. Due to its stability and selective deprotection characteristics, it is favored in solid-phase synthesis and combinatorial chemistry workflows.