Used primarily as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of peptide-based drugs. Its structure allows for selective protection of amine groups during peptide coupling reactions, making it valuable in solid-phase peptide synthesis. The naphthyl group provides enhanced lipophilicity and steric bulk, which can influence the conformation and bioavailability of the final drug molecule. Commonly employed in the preparation of protease inhibitors and other bioactive molecules where controlled functionalization is required.