Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of nicotinic acetylcholine receptor modulators. Commonly employed in cross-coupling reactions such as Suzuki and Stille couplings due to the presence of both chlorine and iodine, allowing selective functionalization. Also utilized in agrochemicals for the production of herbicides and insecticides. Its reactivity makes it valuable in research for constructing complex pyridine-based molecules.