1-[(2-acetoxyethoxy)methyl]-5-bromouracil

1-(2-hydroxyethoxymethyl)pyrimidine-2,4-dione

1-((2-(benzoyloxy)ethoxy)methyl)uracil

2-((4-ethoxy-2-oxopyrimidin-1(2H)-yl)methoxy)ethyl benzoate

1,3-二氧戊环