Used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS), as a building block for incorporating naphthylalanine residues into peptides. It is valuable in creating peptides with specific structural or functional properties, often applied in drug discovery and biochemical research. The Fmoc group protects the amino acid during synthesis, ensuring controlled and precise peptide chain assembly. Its naphthyl side chain can enhance hydrophobic interactions, making it useful in designing peptides for binding studies or mimicking protein-protein interactions. Commonly employed in the development of bioactive peptides, enzyme inhibitors, and probes for studying biological systems.