Photoresist Chemicals 3H-Pyrazol-3-one, 4-[4,5-dihydro-5-(6-methyl-4-oxo-4H-1-benzopyran-3-yl)-1H-pyrazol-3-yl ]-1,2-dihydro-5-methyl- Cas：878631-91-5 Molecular Formula：C17H16N4O3