Photoresist Chemicals Piperazine, 4-(4-chloro-3-methoxyphenyl)-1-[[4-chloro-5-methyl-3-(trifluoromethyl)-1 H-pyrazol-1-yl]acetyl]-2-(trifluoromethyl)- Cas:855342-80-2 Molecular Formula:C19H18Cl2F6N4O2