Photoresist Chemicals 1H-Purine-2,6-dione, 3-butyl-8-chloro-3,9-dihydro-1-[4-[5-(3-methyl-2-furanyl)-1,2,4-oxadiazol -3-yl]butyl]- Cas:925249-71-4 Molecular Formula:C20H23ClN6O4