Used primarily as an intermediate in organic synthesis, especially in the preparation of pharmaceuticals, agrochemicals, and functional materials. Its multiple bromine atoms allow for selective cross-coupling reactions, making it valuable in the construction of complex aromatic systems. Commonly employed in Suzuki, Heck, and Ullmann reactions to introduce aromatic rings into target molecules. Also utilized in the synthesis of ligands, dyes, and polymers where controlled substitution patterns are required. Its reactivity and versatility make it a useful building block in research and development laboratories.