5-FLUOROURACIL

5-Fluorouracil (5-FU) is an antimetabolite chemotherapeutic that inhibits thymidylate synthase, thereby disrupting DNA and RNA synthesis in rapidly dividing cells. It is widely used in the treatment of solid tumors, including colorectal, breast, and skin cancers. Benefits include well-established efficacy and compatibility with multiple combination regimens. Major risks involve myelosuppression, mucositis, dermatologic reactions, and gastrointestinal toxicity, requiring close dose monitoring. Only GMP materials will be supplied, logistics all according to GDP.

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Product Description


Mechanism of action

5Fluorouracil (5FU) is a fluorinated pyrimidine antimetabolite. It is intracellularly converted to several active nucleotides, including FdUMP and FUTP. FdUMP forms a stable ternary complex with thymidylate synthase and reduced folates, leading to inhibition of thymidylate synthesis and depletion of thymidine required for DNA replication. FUTP is incorporated into RNA, disrupting RNA processing and function. Together these actions preferentially impair rapidly dividing cells.

Benefits and advantages

5FU is a cornerstone cytotoxic agent in the treatment of a broad range of solid tumours, including colorectal, breast, head and neck and gastrointestinal cancers. It can be administered as bolus injections, continuous infusions or topical formulations, providing flexibility in oncology protocols. Its long clinical history has resulted in wellcharacterised dosing schemes and combination regimens.

Side effects and risks

As with other antimetabolites, 5FU carries significant toxicity. Doselimiting adverse effects include myelosuppression, mucositis, diarrhoea and handfoot syndrome. Cardiotoxicity, neurotoxicity and severe gastrointestinal injury can occur, particularly in patients with dihydropyrimidine dehydrogenase (DPD) deficiency. Use requires strict oncological supervision, individualised dosing and careful monitoring of blood counts and organ function.

Professional use only. This API is intended for formulation and use by qualified healthcare professionals and institutions.

Only GMP materials will be supplied, logistics all according to GDP.

Datasheet


Molecular Formula

C4H3FN2O2

Molecular Weight

130.08 g/mol

CAS Number

51-21-8

Storage Condition

Store at 25 °C (77 °F); excursions permitted to 15 °C – 30 °C (59 °F -86 °F). /Efudex Solutions/

Solubility

less than 1 mg/mL at 66 °F (NTP, 1992)

Purity

Purity information is available upon request (COA).

Synonym

5-Fluorouracil; fluorouracil; 51-21-8; Efudex; Fluracil

IUPAC/Chemical Name

5-fluoro-1H-pyrimidine-2,4-dione

InChl Key

GHASVSINZRGABV-UHFFFAOYSA-N

InChl Code

InChI=1S/C4H3FN2O2/c5-2-1-6-4(9)7-3(2)8/h1H,(H2,6,7,8,9)

References

https://pubchem.ncbi.nlm.nih.gov/compound/3385;

3D Conformer.

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