Photoresist Chemicals Urea, N-[2-fluoro-5-(trifluoromethyl)phenyl]-N’-[4-(imidazo[1,2-a]pyridin-8-yloxy )phenyl]-, bis(trifluoroacetate) Cas：847054-52-8 Molecular Formula：C21H14F4N4O2.2C2HF3O2