Used in organic synthesis and materials science, particularly in the development of fluorescent probes and sensors due to its strong photoluminescent properties. Its structure allows for effective conjugation in π-extended systems, making it valuable in the design of organic semiconductors and optoelectronic devices. Also explored in medicinal chemistry as a scaffold for inhibitors targeting specific enzymes, leveraging the ethynyl group for covalent interactions or as a bioisostere. Additionally, serves as a building block in metal-catalyzed coupling reactions for constructing complex heterocyclic compounds.