Used in peptide synthesis as a protected D-lysine derivative, enabling selective coupling in the production of complex peptides and proteins. The Z (benzyloxycarbonyl) group protects the alpha-amino group, the Boc (tert-butoxycarbonyl) group protects the epsilon amine, preventing unwanted reactions during chain elongation, while the methyl ester (OMe) protects the C-terminal carboxylic acid. This allows stepwise assembly of peptides with high purity and yield, especially in solid-phase and solution-phase synthesis. Commonly applied in pharmaceutical research, including the development of peptide-based drugs and biochemical probes.