1H-吡咯并[3,2-d]嘧啶-2,4(3H,5H)-二酮

5-benzyl-2,4-dichloropyrrolo[3,2-d]pyrimidine

5-硝基-6-甲基-脲嘧啶

(E)-6-(2-(dimethylamino)vinyl)-5-nitropyrimidin-2,4-dione

2,4-二羟基-6-甲基嘧啶