6-羟基-2-(吡啶-2-基)嘧啶-4(3h)-酮

5,6-dimethyl-2-pyridin-2-yl-1H-pyrimidin-4-one

4-methyl-6-pyridin-2-yl-1,3,5-triazin-2-amine

N-[amino(pyridin-2-yl)methylidene]-5-ethoxy-2-phenyl-1,3-oxazole-4-carboxamide

4-氯-2-吡啶-2-基-嘧啶