3-Bromo-2-iodophenol is primarily utilized in organic synthesis as an intermediate for the preparation of more complex chemical compounds. Its halogenated structure makes it a valuable building block in the development of pharmaceuticals, particularly in the synthesis of active pharmaceutical ingredients (APIs) that require specific halogen substitutions for enhanced biological activity. Additionally, it is employed in the creation of agrochemicals, where its unique structure contributes to the efficacy of pesticides or herbicides. The compound is also used in material science for the synthesis of advanced organic materials, including liquid crystals or polymers, where its halogen atoms can influence the material's properties. In research, it serves as a reagent in cross-coupling reactions, such as Suzuki or Sonogashira couplings, which are pivotal in constructing carbon-carbon bonds for various applications.