Used in pharmaceutical research as a key intermediate in the synthesis of kinase inhibitors, particularly in the development of anticancer agents. Its structure allows for selective binding to specific enzyme targets, making it valuable in drug discovery. Also employed in the design of small-molecule therapeutics targeting neurodegenerative diseases and inflammation. Commonly utilized in click chemistry reactions due to the ethynyl group, enabling efficient conjugation with azide-containing compounds for bioconjugation and labeling studies.