Photoresist Chemicals Butanoic acid, 4-[[1-methyl-5-(2,3,6,7-tetrahydro-2,6-dioxo-1,3-dipropyl-1H-purin-8-yl)- 1H-pyrazol-3-yl]amino]-4-oxo- Cas：574753-33-6 Molecular Formula：C19H25N7O5