Used as an intermediate in the synthesis of X-ray contrast media, particularly in the production of iodinated compounds that enhance imaging clarity in radiological procedures. Its high iodine content contributes to effective radiopacity, making it valuable in diagnostic applications such as angiography and urography. Also employed in the development of certain pharmaceuticals where controlled iodine release or specific aromatic substitution patterns are required. Its structural properties allow for further chemical modifications, supporting its role in creating water-soluble contrast agents with low toxicity profiles.