Figure 1.
The metabolism pathways of 5-fluorouracil in humans (modification of Ref. [5]). Abbreviations: 5-FU, 5-fluorouracil; 5-FUH2, 5-fluoro-5,6-dihydrouracil; 5-FUrd, 5-fluorouridine; 5-FdUrd, 5-fluoro-2’-deoxyuridine; FUMP, 5-fluorouridine-5’-monophosphate; FBAL, α-fluoro-β-alanine.