Widely used as an intermediate in organic synthesis, particularly in cross-coupling reactions such as Suzuki, Stille, and Negishi couplings. Its dual halogen functionality allows selective activation—iodine typically reacts first due to its higher reactivity compared to bromine—enabling stepwise construction of complex aromatic structures. Commonly employed in pharmaceutical and agrochemical research for building substituted aromatic compounds. Also utilized in the development of functional materials, including organic semiconductors and liquid crystals, where precise molecular architecture is critical. Its stability and reactivity profile make it a preferred building block in multi-step synthesis.