Used in peptide synthesis as a protected amino acid derivative, particularly in the preparation of complex bioactive peptides. The acetyl and benzoyl groups act as protecting moieties for the amino and side chain functionalities, allowing selective reaction at specific sites during stepwise assembly. It is especially valuable in solid-phase peptide synthesis (SPPS) for constructing peptide sequences with D-phenylalanine residues, which can enhance metabolic stability and influence conformational properties of the final peptide. Commonly applied in research settings for developing pharmaceutical candidates, including enzyme inhibitors and receptor ligands.