Photoresist Chemicals 3H-Pyrazol-3-one, 5-acetyl-4-[(1,3-dihydro-1,3-dimethyl-2H-imidazol-2-ylidene)ethylidene]- 2,4-dihydro-2-methyl- Cas:878008-37-8 Molecular Formula:C13H16N4O2