Used as a photoaffinity labeling agent in biochemical research, enabling the study of protein-ligand interactions by forming covalent bonds with target proteins upon UV irradiation. Its diazirine group generates reactive carbenes, making it valuable for mapping binding sites and identifying unknown receptors. The trifluoromethyl group enhances stability and lipophilicity, improving membrane permeability in cellular assays. Commonly employed in probe development for drug discovery and proteomics.