Used as a key intermediate in the synthesis of pharmaceutical agents, particularly in the development of protease inhibitors and antiviral compounds. Its sulfonamide core enhances binding affinity to enzyme active sites, making it valuable in drug design. Commonly employed in medicinal chemistry for structure-activity relationship (SAR) studies due to its rigid aromatic scaffold and functional versatility. Also utilized in the preparation of fluorescent probes for biochemical assays, leveraging its naphthalene moiety for UV detection and imaging applications.