Used as an intermediate in the synthesis of pharmaceuticals, particularly in the production of diuretic drugs such as loop diuretics. It serves as a building block in organic reactions where the sulfonamide group is essential for biological activity. Also employed in the development of agrochemicals and dyes due to its chlorine substituents, which allow further functionalization. Its stability and reactivity profile make it suitable for use in cross-coupling reactions and other transformations in medicinal chemistry research.