Used primarily as an intermediate in the synthesis of pharmaceuticals, particularly in the development of sulfonamide-based drugs. It plays a key role in introducing the sulfonyl group into active molecules, enhancing their biological activity or altering pharmacokinetic properties. Commonly applied in the production of agrochemicals and dyes due to its reactivity with amines and alcohols. Its fluorinated aromatic structure makes it valuable in creating compounds with improved metabolic stability and target selectivity.