Photoresist Chemicals 5-Pyrimidinecarboxylic acid, 1,4-dihydro-6-methyl-2-(methylthio)-4-phenyl-, ethyl ester, 2,2,2-trifluoroacetate (1:1) Cas：928119-43-1 Molecular Formula：C15H18N2O2S.C2HF3O2