This chemical is primarily used in peptide synthesis as a protected form of aspartic acid. The benzyl (Bzl) groups act as protecting groups for the carboxyl and side chain functionalities, preventing unwanted reactions during peptide bond formation. It is particularly useful in solid-phase peptide synthesis (SPPS) and solution-phase synthesis, where selective deprotection is required to build complex peptide structures. Its application is crucial in the production of bioactive peptides, pharmaceuticals, and research compounds, ensuring precise control over the assembly of amino acids. After synthesis, the protecting groups can be removed under specific conditions to yield the desired peptide product.