Used primarily as an intermediate in the synthesis of sulfonamide-based pharmaceuticals and agrochemicals. Its reactivity allows for the introduction of the 4-chloronaphthylsulfonyl group, which can enhance the lipophilicity and binding affinity of active compounds. Commonly employed in the development of bioactive molecules, including protease inhibitors and fluorescent probes for biochemical assays. Also utilized in organic synthesis for constructing complex sulfone derivatives due to its ability to form stable amide bonds with amines under mild conditions.