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 group safeguards the amino terminus, and the 2-chlorobenzyloxycarbonyl (2-Cl-Z) group protects the side chain of lysine. This protection strategy allows for the selective deprotection and elongation of peptide chains, ensuring precise control over the synthesis process. It is especially valuable in creating complex peptides for research in biochemistry, pharmaceuticals, and drug development, where lysine residues play a critical role in structure and function. Its use is common in synthesizing peptides for therapeutic agents, enzyme studies, and antibody production.