Photoresist Chemicals 2H-1-Benzopyran-2,3-dicarboxylic acid, 6,8-dichloro-2-[[3-methoxy-1-(methoxycarbonyl)-3-oxo-1-propenyl]oxy]-, dimethyl ester, (E)- Cas：64657-48-3 Molecular Formula：C19H16Cl2O10