5-bromo-2,6-dichloropyrimidin-4-amine

6-氯-2-吗啉-4-基-嘧啶-4-胺

2,4-dichloro-6-pyrrol-1-ylpyrimidine

6-氯-2-(1-吡咯烷基)-4-嘧啶胺

2,4-二氨基-6-氯嘧啶