甲基吡啶亚胺甲酯

2-(2-吡啶)-4-噻唑羧酸

2-吡啶基[4-(三氟甲基)苯基]甲酮

2-(2H-tetrazol-5-yl)piperidine

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