This compound is widely used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS). It serves as a protected amino acid derivative, where the Fmoc (fluorenylmethyloxycarbonyl) group acts as a temporary protecting group for the amino group, and the OBzl (benzyl ester) protects the carboxyl group of aspartic acid. This protection ensures selective reactivity during peptide chain assembly. It is especially valuable in constructing peptides containing aspartic acid residues, allowing precise control over the sequence and structure of the peptide. Its application is critical in the development of therapeutic peptides, research peptides, and peptide-based materials.