Used in the synthesis of dyes and pigments due to its aromatic amine structure and iodine substituent, which enhances reactivity in coupling reactions. Employed as an intermediate in pharmaceutical manufacturing, particularly in the production of certain antimicrobial and antithyroid agents. Its iodine content makes it valuable in radiopharmaceutical research for labeling and tracer applications. Also utilized in the development of specialty polymers where thermal stability and molecular rigidity are required.