1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-methyl-oxolan-2-yl]-5-fluoro-pyrimidine-2,4-dione;1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-methyloxolan-2-yl]-5-fluoropyrimidine-2,4-dione;1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-methyl-tetrahydrofuran-2-yl]-5-fluoro-pyrimidine-2,4-quinone;Capecitabine Related Compound B (20 mg) (5'-deoxy-5-fluorouridine);5μdFUrd, Doxifluridine;5μdFUrd, 5-Fluoro-5μ-deoxyuridine;5’-Deoxy-5-fluomuridine;2,4(1H,3H)-Pyrimidinedione, 1-(5-deoxy-b-D-ribofuranosyl)-5-fluoro-
Doxifluridine is an intermediary prodrug of fluorouracil , the pyrimidine analog that inhibits thymidylate synthase selectively in tumor cells, interfering with DNA synthesis. Doxifluridine is one of two intermediary metabolites formed during metabolic conversion of the chemotherapeutic prodrug, capecitabine , to fluorouracil.