Used as an intermediate in organic synthesis, particularly in the preparation of pharmaceuticals and fine chemicals. It serves as a building block in the formation of sulfonamide derivatives, which are important in medicinal chemistry for developing bioactive molecules. Its iodo group allows for further functionalization via cross-coupling reactions, such as Suzuki or Heck reactions, enabling the construction of complex aromatic structures. Also employed in the development of radiopharmaceuticals due to the presence of iodine, which can be isotopically labeled for imaging or therapeutic applications.