Widely used in organic synthesis, particularly as a sulfonylating agent to introduce the 4-bromo-2,6-dimethylbenzenesulfonyl group into molecules. This functionality is valuable in the preparation of sulfonamides, which are key structural motifs in pharmaceuticals and agrochemicals. Its steric hindrance due to the dimethyl substitution enhances selectivity in reactions, making it useful in multi-step synthesis where controlled functionalization is required. It also serves as an intermediate in the development of bioactive compounds, including potential drug candidates, where the bromo substituent allows for further derivatization via cross-coupling reactions such as Suzuki or Heck reactions. Additionally, it finds use in the synthesis of specialty polymers and ligands for catalysis.