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 to enzyme targets, enhancing drug efficacy. Commonly employed in cross-coupling reactions due to the ethynyl group, enabling the formation of complex molecules in medicinal chemistry. Also utilized in the preparation of fluorescent probes for biochemical assays, leveraging its electron-rich aromatic system and fluorine atom for improved detection sensitivity.