Photoresist Chemicals 3H-Imidazo[4,5-b]pyridine-6-carboxylic acid, 2-[2,4-bis(1-methylethoxy)phenyl]-, ethyl ester, 2,2,2-trifluoroacetate (1:1) Cas：927908-41-6 Molecular Formula：C21H25N3O4.C2HF3O2