This compound is primarily utilized in peptide synthesis as a reagent for introducing the phenylalanine residue into peptide chains. Its naphthalenesulfonyl group acts as a protecting group, ensuring selective reactions during the synthesis process. It is particularly valuable in solid-phase peptide synthesis, where it helps in constructing complex peptides with high precision. Additionally, it is employed in biochemical research to study enzyme-substrate interactions and to modify peptides for functional analysis. Its stability and reactivity make it a useful tool in organic chemistry laboratories for designing and synthesizing novel peptide-based compounds.