Used as a photoaffinity labeling agent in biochemical and pharmacological research. Upon exposure to light, it generates highly reactive carbene species that form covalent bonds with nearby biomolecules, enabling the study of drug-receptor interactions, protein-ligand binding sites, and mapping of molecular interactions in complex biological systems. Its trifluoromethyl and aryl groups enhance stability and binding affinity, making it valuable for probing membrane proteins and enzymes. Commonly applied in the development and analysis of pharmaceuticals where precise target identification is critical.