This compound is primarily used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS). It serves as a protected amino acid derivative, where the Fmoc (9-fluorenylmethoxycarbonyl) group protects the amine functionality, and the Boc (tert-butyloxycarbonyl) group protects the side chain of the lysine residue. This dual protection allows for selective deprotection during the synthesis process, enabling the stepwise construction of peptides with high precision. It is especially valuable in the synthesis of complex peptides and proteins, where maintaining the integrity of specific functional groups is critical. Its application is common in pharmaceutical research, biotechnology, and the development of therapeutic peptides.