Used in peptide synthesis as a protected form of aspartic acid, ensuring specific amino acid incorporation without unwanted side reactions. It is particularly valuable in solid-phase peptide synthesis (SPPS) for constructing complex peptides or proteins. The Boc (tert-butyloxycarbonyl) group protects the amine functionality, while the OBzl (benzyl) group safeguards the carboxyl side chain, allowing selective deprotection during synthesis. This compound is essential in producing peptides for pharmaceutical research, drug development, and biochemical studies, where precise control over peptide sequences is critical. Its stability and compatibility with various coupling reagents make it a reliable choice for synthesizing peptides with aspartic acid residues.