6-Iodocinnoline is a halogenated cinnoline derivative characterized by the presence of an iodine substituent at the 6-position of the cinnoline ring system. This compound serves as a versatile intermediate in organic synthesis, particularly in the development of pharmaceuticals, agrochemicals, and functional materials. The iodine moiety enhances its reactivity in cross-coupling reactions, such as Suzuki or Sonogashira couplings, enabling efficient derivatization. Its well-defined structure and stability under standard conditions make it suitable for precise synthetic applications. Additionally, 6-Iodocinnoline is valuable in medicinal chemistry for constructing heterocyclic scaffolds with potential biological activity. Proper handling and storage are recommended due to its sensitivity to light and moisture.