3-Iodobenzonitrile is primarily used as a versatile intermediate in organic synthesis. It plays a significant role in the development of pharmaceuticals, where it is employed in the construction of complex molecules through cross-coupling reactions, such as Suzuki or Sonogashira couplings. Its iodine atom serves as a reactive site for further functionalization, making it valuable in the synthesis of bioactive compounds. Additionally, it is utilized in the production of agrochemicals, where it contributes to the creation of herbicides and pesticides. In material science, 3-Iodobenzonitrile is used in the synthesis of organic electronic materials, including liquid crystals and polymers, due to its ability to introduce specific functional groups into molecular structures. Its applications extend to research and development, where it aids in the study of new chemical reactions and pathways.