Photoresist Chemicals 3H-Pyrazol-3-one, 4-chloro-5-[[4-(2,4-dimethylphenyl)-1-piperazinyl]methyl]-1,2-dihydro-2-( 4-methoxyphenyl)-1-methyl- Cas:897667-97-9 Molecular Formula:C24H29ClN4O2