Photoresist Chemicals 1H-Imidazole, 2-[2-(3,4-dichlorophenyl)ethyl]-4,5-bis(3-fluorophenyl)-4,5-dihydro-, (4R,5S)-rel-, mono(trifluoroacetate) Cas：836656-12-3 Molecular Formula：C23H18Cl2F2N2.C2HF3O2