2,3,5-三苯甲酰尿苷

5-氯尿嘧啶

1-(3-叔丁基-5-碘-4-甲氧基苯基)嘧啶-2,4(1H,3H)-二酮

5,5-二溴-6-羟基二氢-2,4(1H,3H)-嘧啶二酮