1,3-dibenzoyl-5-fluoropyrimidine-2,4-dione

(5-fluoro-2,4-dioxopyrimidin-1-yl)methyl acetate

1,3-Bis-(acetoxy-methyl)-5-fluor-uracil

5-fluoro-2,4-dioxo-N-pentylpyrimidine-1-carboxamide

5-fluoro-N-heptyl-2,4-dioxopyrimidine-1-carboxamide