National Cancer Institute Thesaurus

Last uploaded: June 2, 2026
Id http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C505
http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C505
Preferred Name

Fluorouracil

Definitions
An antimetabolite fluoropyrimidine analog of the nucleoside pyrimidine with antineoplastic activity. Fluorouracil and its metabolites possess a number of different mechanisms of action. In vivo, fluoruracil is converted to the active metabolite 5-fluoroxyuridine monophosphate (F-UMP); replacing uracil, F-UMP incorporates into RNA and inhibits RNA processing, thereby inhibiting cell growth. Another active metabolite, 5-5-fluoro-2'-deoxyuridine-5'-O-monophosphate (F-dUMP), inhibits thymidylate synthase, resulting in the depletion of thymidine triphosphate (TTP), one of the four nucleotide triphosphates used in the in vivo synthesis of DNA. Other fluorouracil metabolites incorporate into both RNA and DNA; incorporation into RNA results in major effects on both RNA processing and functions.
Synonyms
5-Fluoro-2,4(1H, 3H)-pyrimidinedione
Flurablastin
5-fluorouracil
Fluroblastin
5 Fluorouracil
FLUOROURACIL
5-Fluoro-2,4(1H,3H)-pyrimidinedione
2,4-Dioxo-5-fluoropyrimidine
5-Fluorouracil
Fluorouracil
fluorouracil
5 Fluorouracilum
Fluoro Uracil
5 FU
5-FU
5-Fluracil
5-Fu
5FU
AccuSite
Adrucil
Carac
Fluouracil
Fluracedyl
Fluracil
Fluril
Ribofluor
Ro 2-9757
Ro-2-9757
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