Used primarily as an intermediate in the synthesis of sulfa-based pharmaceuticals, particularly in the development of carbonic anhydrase inhibitors. Its structure allows for selective binding to enzyme active sites, making it valuable in creating drugs for glaucoma and certain types of epilepsy. The chloro and ethoxy groups enhance lipophilicity and metabolic stability, improving drug bioavailability. Also employed in research for designing novel sulfonamide derivatives with antimicrobial and anticancer properties.