Used as an intermediate in organic synthesis, particularly in the preparation of pharmaceuticals and agrochemicals. Its alkyne and aryl bromide functionalities allow for versatile coupling reactions, such as Sonogashira and Suzuki couplings, enabling the construction of complex aromatic and conjugated systems. Commonly employed in the development of functional materials, including liquid crystals and fluorescent dyes. Also utilized in click chemistry via copper-catalyzed azide-alkyne cycloaddition (CuAAC) for bioconjugation and drug discovery applications.