Photoresist Chemicals Benzonitrile, 4-[4,4-dimethyl-5-oxo-3-[3-[4-(propylsulfonyl)phenoxy]propyl]-2-thioxo-1- imidazolidinyl]-2-(trifluoromethyl)- Cas:917228-97-8 Molecular Formula:C25H26F3N3O4S2