4,6-二甲基[1,2,5]噻二唑并[3,4-d]嘧啶-5,7(4H,6H)-二酮

5-[(4-hydroxyphenyl)methylidene]-1,3-dimethyl-1,3-diazinane-2,4,6-trione

5-[[4-(二甲基氨基)苯基]亚甲基]-1,3-二甲基巴比妥酸

5-[(4-methoxyphenyl)methylidene]-1,3-dimethyl-1,3-diazinane-2,4,6-trione

1,3-dimethyl-6-(methylamino)-5-nitrosopyrimidine-2,4-dione