5-氟尿嘧啶产品是5-Fluorouracil (5-FU) is an anticancer agent that gets metabolized to form fluorodeoxyuridine monophosphate (FdUMP), fluorodeoxyuridine triphosphate (FdUTP) and fluorouridine (FUTP). FdUMP inhibits thymidylate synthase, causing a reduction in dTMP synthesis. FUTP and FdUTP are misincorporated into RNA and DNA respectively.