2-羟基-6-甲氧基吡啶

1-(6-氯吡啶-2-基)-5-三氟甲基-1H-吡唑-4-羧酸乙酯

2,6-bis(3,5-dimethylpyrazol-1-yl)pyridine

6-diphenylphosphanyl-1H-pyridin-2-one

4,2':6',4''-三联吡啶