Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of sulfa-based drugs. It serves as a building block in organic reactions where sulfonamide functionality is required. Commonly applied in research settings for modifying molecular structures to enhance drug solubility or bioavailability. Also utilized in agrochemical synthesis for creating active ingredients in certain pesticides and herbicides. Its stability and reactivity make it suitable for use in industrial-scale chemical processes.