Used primarily as a building block in organic synthesis, especially in the preparation of advanced intermediates for pharmaceuticals and functional materials. Its multiple halogen sites allow for selective cross-coupling reactions, making it valuable in the development of liquid crystals, organic semiconductors, and conjugated polymers. It is also employed in the synthesis of complex aromatic systems where sequential functionalization is required. Due to the differing reactivity of bromo and iodo groups, it enables stepwise substitution under controlled conditions, useful in multi-step synthetic routes for research and specialty chemical production.