Nα-Z-Nδ-Fmoc-L-ornithine is primarily used in peptide synthesis, where it serves as a protected amino acid derivative. The Z (benzyloxycarbonyl) and Fmoc (fluorenylmethyloxycarbonyl) groups act as protective groups for the amine functionalities, allowing selective deprotection during the synthesis process. This compound is particularly valuable in solid-phase peptide synthesis (SPPS), enabling the stepwise construction of peptides with high precision. Its dual protection strategy ensures that the ornithine side chain and the alpha-amino group are shielded from unwanted reactions, facilitating the synthesis of complex peptides with ornithine residues. This makes it a crucial reagent in the development of peptides for research, pharmaceuticals, and biotechnology applications.