Fmoc-Dap(Z)-OH is widely used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS). It serves as a protected amino acid derivative, where the Fmoc group protects the amino group, and the Z group protects the side chain. This compound is essential for introducing diaminopropionic acid (Dap) into peptide sequences, enabling the construction of complex peptides with specific structural and functional properties. Its applications extend to the development of peptide-based drugs, biomaterials, and research tools in biochemistry and molecular biology. The protective groups ensure selective reactivity during synthesis, allowing for precise control over peptide chain assembly.