4-氨基-2,6-二羟基嘧啶

马来酸二胺

1,3-dibenzylpyrimidine-2,4-dione

[(2S,5R)-5-(2,4-dioxopyrimidin-1-yl)-2,5-dihydrofuran-2-yl]methyl acetate

阿糖尿苷