Used in organic synthesis as an intermediate for pharmaceuticals and functional materials. The iodine atom enables cross-coupling reactions, such as Suzuki or Heck reactions, allowing the construction of complex indole derivatives. Commonly employed in the development of bioactive molecules, including potential antitumor and antimicrobial agents. Also utilized in the synthesis of serotonin receptor ligands and other neurochemical probes due to the indole core’s prevalence in neurotransmitters. Suitable for research in medicinal chemistry and drug discovery.