Used as a key intermediate in the synthesis of fluorescent dyes and optical brighteners due to its strong electron-donating sulfonamide structure. Its rigid naphthalene core and polar functional groups make it suitable for applications in organic light-emitting diodes (OLEDs) and as a dopant in photoluminescent materials. Also explored in medicinal chemistry for designing enzyme inhibitors, particularly targeting kinases and proteases, owing to its ability to mimic peptide motifs and bind to active sites through hydrogen bonding and π-π interactions. Shows potential in developing sensors for metal ions in environmental monitoring due to its fluorescence response upon coordination.