5-溴-2-氯嘧啶

2,5-二溴嘧啶

5-溴-1-甲基嘧啶-2(1H)-酮

1-benzyl-5-bromopyrimidin-2-one

5-溴-2-(叔-丁基二甲氧基甲硅烷)嘧啶