3,4-吡啶二酰亚胺

2-溴-4,5-二甲基吡啶

2-溴-3,4-二甲基吡啶

2-氯-4,5-二甲基-吡啶

2-(4,5-dimethylpyridin-2-yl)-4,5-dimethylpyridine