5-硝基-6-甲基-脲嘧啶

1H-吡咯并[3,2-d]嘧啶-2,4(3H,5H)-二酮

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

4-Chloro-2-oxo-1,2-dihydropyrrolo[3,2-d]pyrimidine

吗啉