5-bromo-1-(4-methoxyphenyl)sulfonylpyrimidine-2,4-dione

5-bromo-1-(4-ethoxyphenyl)sulfonylpyrimidine-2,4-dione

5-bromo-1-(4-butoxyphenyl)sulfonylpyrimidine-2,4-dione

5-(2-羟基乙基)氨基尿嘧啶

5-[benzyl(methyl)amino]-1H-pyrimidine-2,4-dione