Used primarily as an intermediate in the synthesis of sulfa-based pharmaceuticals, particularly carbonic anhydrase inhibitors. It plays a key role in the production of diuretic drugs such as acetazolamide and methazolamide, which are used to treat glaucoma, epilepsy, and altitude sickness. Its structure allows for effective binding to carbonic anhydrase enzymes, making it valuable in designing drugs that regulate fluid balance and intraocular pressure. Also utilized in research for developing new sulfonamide derivatives with potential therapeutic effects.