Widely used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of kinase inhibitors and anticancer agents. Its structure allows for selective functionalization, making it valuable in creating compounds that target specific biological pathways. Commonly employed in research settings for the preparation of quinazoline-based drug candidates due to its reactivity at the iodine site, enabling coupling reactions such as Suzuki or Buchwald-Hartwig aminations. Also utilized in agrochemical research for developing novel active ingredients with potential pesticidal or herbicidal activity, and in some cases for antimicrobial agents.