Photoresist Chemicals 2H,6H-Benzo[1,2-b:5,4-b’]dipyran-6-one,7- (3,4-dihydroxyphenyl)-5-hydroxy-2,2- dimethyl-10-(3-methyl,cas:60297-37-2 Cas：60297-37-2 Molecular Formula：C25H24O6