4-甲基-2,6-吡啶二甲醛

6-甲基-2,4-吡啶二甲醛

3,5-二溴-2,4,6-三甲基吡啶

5-(4,6-dimethylpyridin-2-yl)pyrimidine

2,6-dimethyl-4-(5-pyrimidinyl)pyridine