Photoresist Chemicals Benzaldehyde, 4-[4-(2,4-diamino-6-methyl-5-pyrimidinyl)-1-piperazinyl]-, O-(2-benzofuranylmethyl)oxime, ethanedioate (1:1) Cas：912482-90-7 Molecular Formula：C25H27N7O2.C2H2O4