Photoresist Chemicals [1]Benzopyrano[3,4-b]furo[2,3-h][1]benzopyran-6(6aH)-one,12,12a-dihydro-8,9-dimethoxy-2-(1-methylethyl)-,(6aR-cis)- (9CI) Cas：5964-15-8 Molecular Formula：C23H22 O6