Used in organic synthesis as an intermediate for pharmaceuticals and bioactive compounds. Its ethynyl group allows participation in coupling reactions, such as Sonogashira coupling, enabling the construction of complex aromatic and heterocyclic systems. Commonly employed in the development of kinase inhibitors and anticancer agents due to its ability to interact with biological targets through hydrogen bonding and π-π interactions. Also utilized in materials science for designing conjugated molecules in optoelectronic applications.