Used primarily as a building block in organic synthesis, especially in the preparation of advanced intermediates for pharmaceuticals and agrochemicals. Its multiple halogen atoms allow selective cross-coupling reactions, making it valuable in the development of complex aromatic systems. Commonly employed in Suzuki, Stille, and Ullmann reactions to construct biaryl structures. Also utilized in materials science for synthesizing organic semiconductors and liquid crystals due to its rigid aromatic core and functional versatility.