1-phenyl-3-pyridin-3-ylpropane-1,3-dione

methyl 1-phenacylpyridin-1-ium-3-carboxylate,bromide

methyl 2-(4-fluorophenyl)pyridine-3-carboxylate

dimethyl 4-methyl-4H-pyridine-1,3-dicarboxylate

3-三氟乙酰基吡啶