Photoresist Chemicals 7H-Furo[3,2-g][1]benzopyran-7-one,4-[[4-(2,5-dihydro-4-methyl-5-oxo-2-furanyl)-3-methyl-2-buten-1-yl]oxy]-, (+)- Cas:94418-50-5 Molecular Formula:C21H18 O6