5-(2-hydroxyethoxymethyl)-1,3-dimethylpyrimidine-2,4-dione

5-(2-hydroxyethylsulfanylmethyl)-1H-pyrimidine-2,4-dione

1,2,3,4-四氢-2,4-二氧代-5-嘧啶羧酸甲酯

2-[(2,4-dioxo-1H-pyrimidin-5-yl)methylsulfanyl]acetic acid

5-巯基甲脲嘧啶