Photoresist Chemicals 1H-Pyrazole, 5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-3-[2-(1-methylethyl)- 1H-imidazol-4-yl]-, monohydrochloride Cas：681178-95-0 Molecular Formula：C22H19Cl3N4.ClH