This chemical is primarily used in peptide synthesis, where it serves as a protected form of lysine. The benzyloxycarbonyl (Cbz) group protects the alpha-amino (N2) functionality, while the fluorenylmethoxycarbonyl (Fmoc) group protects the side chain epsilon-amino (N6) functionality. This allows for selective deprotection and coupling reactions during the step-by-step assembly of peptides. It is particularly valuable in solid-phase peptide synthesis (SPPS), enabling the precise construction of complex peptides and proteins for research, pharmaceuticals, and biotechnology applications. Its use ensures high purity and efficiency in synthesizing peptides with specific sequences and structures.