1. The document discusses the diuretic drug acetazolamide. It describes acetazolamide's use as a carbonic anhydrase inhibitor diuretic to treat conditions like heart failure, kidney disease, and high blood pressure. 2. The structure-activity relationship of acetazolamide is discussed, noting the importance of the free amide and sulfonamide groups. Acetazolamide's mode of action involves inhibiting carbonic anhydrase and reducing extracellular fluid levels. 3. Analytical techniques like UV-Vis and IR spectroscopy are described and applied to analyze acetazolamide's functional groups including the carbonyl group.