Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of sulfonamide-based drugs with antimicrobial and anti-inflammatory properties. It serves as a building block in organic synthesis, enabling the introduction of iodine and sulfonamide functional groups into complex molecules. Its reactivity makes it valuable in cross-coupling reactions, such as Suzuki or Heck reactions, for constructing biaryl systems found in bioactive compounds. Also employed in radiolabeling studies and the preparation of contrast agents due to the presence of iodine.