Used as a key intermediate in organic synthesis, particularly in the preparation of conjugated systems and heterocyclic compounds. It serves as a bifunctional alkylating agent due to the presence of two bromine atoms, enabling cross-coupling reactions such as Sonogashira or Suzuki couplings to build complex molecular architectures. Commonly employed in the synthesis of pharmaceuticals, agrochemicals, and advanced materials like organic semiconductors. Its rigid alkyne spacer helps maintain molecular geometry in designed structures, making it valuable in materials science and medicinal chemistry research.