This chemical is primarily used in peptide synthesis as a protecting group reagent. It plays a critical role in solid-phase peptide synthesis (SPPS) by facilitating the protection of amino groups during the assembly of peptide chains. The fluorenylmethoxycarbonyl (Fmoc) group protects the amine functionality, while the tert-butyloxycarbonyl (Boc) group safeguards the side chain of lysine or other amino acids. This dual protection ensures selective deprotection and coupling reactions, enabling the synthesis of complex peptides with high precision. It is particularly valuable in the production of therapeutic peptides, research peptides, and peptide-based materials, where controlled and sequential assembly is essential. Its application extends to the development of peptide libraries for drug discovery and biochemical studies.