Used in solid-phase peptide synthesis as a protected amino acid building block. The Boc and Fmoc groups provide orthogonal protection for the alpha-amino and side-chain amino functions, respectively, allowing selective deprotection during stepwise peptide assembly. Particularly useful for incorporating D-configured diaminopropionic acid into peptide sequences where stereochemistry and side-chain functionality are critical, such as in the development of peptide-based drugs, enzyme inhibitors, or bioactive probes. Its protected form ensures minimal side reactions and high coupling efficiency in automated synthesis.