Photoresist Chemicals 3H-Pyrazol-3-one,2-[5-[[2-(acetyloxy)ethyl]sulfonyl]-2-methoxyphenyl]-2,4-dihydro-5-methyl-4-[2-(4-methyl-2-nitrophenyl)diazenyl]- Cas:85750-10-3 Molecular Formula:C22H23 N5 O8 S