Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors for cancer treatment. Its structure allows for selective binding in biological systems, making it valuable in creating targeted therapies. Commonly employed in cross-coupling reactions due to the ethynyl group, enabling the formation of complex molecules in medicinal chemistry research. Also utilized in the preparation of fluorinated heterocyclic compounds to enhance metabolic stability and bioavailability in drug candidates.