尿素

1-乙基嘧啶-2,4(1H,3H)-二酮

4-nitro-N-(2-oxo-1H-pyrimidin-6-yl)benzamide

1-trimethylsilyl-4-(trimethylsilylamino)pyrimidin-2-one

1,2-Bis[N-(2-oxo-1,2-dihydropyrimidin-4-yl)aminomethoxy]ethan-hydroiodid