Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of nitrogen-containing heterocyclic drugs. It serves as a building block in medicinal chemistry for creating sulfonamide-based bioactive molecules. Its chloro and sulfonamide functional groups allow for further chemical modifications, enabling the production of compounds with potential antimicrobial, anti-inflammatory, or central nervous system activity. Also employed in research settings for designing enzyme inhibitors and receptor ligands.