6-甲基-5-硝基-2,4-吡啶二胺

4-氯-5-碘-6-甲基-2-嘧啶胺

2-氯-4-甲氧基-6-甲基嘧啶

2-氨基-4-甲氧基-6-甲基嘧啶

ethyl 5-chloro-7-methylimidazo[1,2-a]pyrimidine-2-carboxylate