5-氯-[1,2,4]三唑并[4,3-A]嘧啶-7-甲酸乙酯

5-溴-1H-吡唑并[3,4-b]吡啶-3-羧酸

2-Bromo-1-(2-bromo-3-pyridinyl)ethanone

2-bromo-1-(2-chloropyridin-3-yl)ethanone

4-(2-氯-3-吡啶)-n-甲基-2-嘧啶胺