Used in organic synthesis as a building block for pharmaceuticals and agrochemicals, particularly in the preparation of pyridine-based compounds. Its ethynyl group enables coupling reactions, such as Sonogashira or click chemistry, allowing the introduction of functional moieties for drug discovery. Commonly employed in the development of kinase inhibitors and other bioactive molecules due to its ability to enhance binding interactions in target proteins. Also utilized in materials science for constructing conjugated systems in organic electronics.