Boc-D-Dap-OH is commonly used in peptide synthesis as a building block for creating complex peptides. Its Boc (tert-butoxycarbonyl) protecting group ensures selective reactivity during the coupling process, making it valuable in constructing peptide chains with specific sequences. It is particularly useful in medicinal chemistry for designing peptide-based drugs, where precise control over amino acid incorporation is critical. Additionally, it finds application in research for studying peptide interactions, enzyme mechanisms, and protein folding. Its stability and compatibility with solid-phase peptide synthesis (SPPS) techniques make it a preferred choice in both academic and industrial settings.