Photoresist Chemicals Methanone, [4-bromo-2-[(5-chloro-1,3-dimethyl-1H-pyrazol-4-yl)methyl]phenyl](1-eth yl-5-hydroxy-1H-pyrazol-4-yl)- Cas：827323-87-5 Molecular Formula：C18H18BrClN4O2