Used primarily as a key intermediate in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. It is valuable for introducing sulfonyl chloride groups into molecules, which can then be further modified to create sulfonamides or sulfonate esters. These derivatives are often utilized in the development of drugs targeting various diseases, including antibacterial and antiviral agents. Additionally, it finds application in material science for the synthesis of specialized polymers and coatings, where the sulfonyl group enhances stability and performance. Its bromo and fluoro substituents also make it a useful building block in the creation of complex, halogenated compounds for advanced chemical research.