N-pyridin-3-ylformamide

3-吡咯烷-1-吡啶

3-hydroxy-2-(3-hydroxy-4-oxo-1H-pyridin-2-yl)-1H-pyridin-4-one

3-氧代-3-苯基-N-(3-吡啶基)丙酰胺

1-pyridin-2-yl-3-pyridin-3-ylurea