This compound is widely used in peptide synthesis as a protecting group for aspartic acid. The Boc group safeguards the amino functionality, while the benzyl ester protects the carboxyl group, preventing unwanted side reactions during peptide chain assembly. It is particularly valuable in solid-phase peptide synthesis (SPPS), where selective deprotection allows for the stepwise construction of complex peptides. Its stability under various reaction conditions makes it a reliable choice for synthesizing peptides with aspartic acid residues. Additionally, it is employed in the preparation of peptide-based drugs, bioactive peptides, and research tools in biochemistry and medicinal chemistry.