Photoresist Chemicals Spiro[3H-indole-3,2′-thiazolidine]-2,4′(1H)-dione, 3′-(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)-1-methyl- Cas：556804-30-9 Molecular Formula：C22H20N4O3S