Photoresist Chemicals 3H-Pyrazol-3-one,2-[5-[[2-(acetyloxy)ethyl]sulfonyl]-2-methoxyphenyl]-2,4-dihydro-4-[2-(4-methoxy-2-nitrophenyl)diazenyl]-5-methyl- Cas：85750-11-4 Molecular Formula：C22H23 N5 O9 S