Used as an intermediate in the synthesis of biologically active compounds, particularly in the development of sulfonamide-based pharmaceuticals. Its aldehyde functional group allows for further derivatization, enabling the formation of Schiff bases or other condensation products useful in medicinal chemistry. Commonly employed in research settings to design inhibitors targeting enzymes such as carbonic anhydrases or proteases. Also utilized in the preparation of fluorescent probes due to its ability to undergo selective reactions with nucleophiles, making it valuable in bioimaging and diagnostic applications.