Used in biochemical and biophysical research for photoaffinity labeling, enabling the study of protein-ligand interactions. Upon exposure to light, the diazirine group generates reactive carbenes that form covalent bonds with nearby biomolecules, helping to capture and identify transient molecular interactions. The trifluoromethyl group enhances photochemical stability and labeling efficiency. The polyether linker provides flexibility and improved solubility, facilitating access to binding sites in complex biological systems. Commonly applied in mapping drug-binding sites, receptor-ligand interactions, and protein-protein interfaces.