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Fluorouracil (Adrucil)
Antitumor agent;inhibitor of thymidylate synthase

Catalog No.A4071
Size Price Stock Qty
10mM (in 1mL DMSO)
In stock
In stock
In stock
In stock

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Sample solution is provided at 25 µL, 10mM.

Product Citations

1. Cho SY, Chae J, et al. "Unstable Genome and Transcriptome Dynamics during Tumor Metastasis Contribute to Therapeutic Heterogeneity in Colorectal Cancers." Clin Cancer Res. 2019 Jan 22. PMID:30670495
2. Zhang B, Cui B, et al. "ATR activated by EB virus facilitates chemotherapy resistance to cisplatin or 5-fluorouracil in human nasopharyngeal carcinoma." Cancer Manag Res. 2019 Jan 9;11:573-585. PMID:30666155
3. Deng Y, Li F, et al. "Triptolide sensitizes breast cancer cells to Doxorubicin through the DNA damage response inhibition." Mol Carcinog. 2018 Jun;57(6):807-814. PMID:29500880

Quality Control

Chemical structure

Fluorouracil (Adrucil)

Related Biological Data

Fluorouracil (Adrucil)

Related Biological Data

Fluorouracil (Adrucil)

Related Biological Data

Fluorouracil (Adrucil)


Cell experiment [1]:

Cell lines

Human colon carcinoma cell line HT-29

Preparation method

The solubility of this compound in DMSO is >10 mM. General tips for obtaining a higher concentration: Please warm the tube at 37℃ for 10 minutes and/or shake it in the ultrasonic bath for a while. Stock solution can be stored below -20℃ for several months.

Reaction Conditions

0.01 ~ 10 μM; 7 days


In human colon carcinoma cell line HT-29, Fluorouracil suppressed cell viability, with the IC50 value of 2.5 μM.

Animal experiment [2]:

Animal models

C56B1/6 mice bearing Colon 38 tumor

Dosage form

100 mg/kg; i.p.; weekly


Fluorouracil (100mg/kg) significantly suppressed tumor growth of murine colon carcinoma Colon 38 with tumor-doubling time (TD), growth-delay factor (GDF), and T/C of 26.5 days, 4.4, and 14%.

Other notes

Please test the solubility of all compounds indoor, and the actual solubility may slightly differ with the theoretical value. This is caused by an experimental system error and it is normal.


[1]. Schwartz EL, Baptiste N, Wadler S, Makower D. Thymidine phosphorylase mediates the sensitivity of human colon carcinoma cells to 5-fluorouracil. J Biol Chem. 1995 Aug 11;270(32):19073-7.

[2]. Van Laar JA, Rustum YM, Van der Wilt CL, Smid K, Kuiper CM, Pinedo HM, Peters GJ. Tumor size and origin determine the antitumor activity of cisplatin or 5-fluorouracil and its modulation by leucovorin in murine colon carcinomas. Cancer Chemother Pharmacol. 1996;39(1-2):79-89.

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Chemical Properties

Cas No. 51-21-8 SDF Download SDF
Synonyms 5-Fluorouracil,5-FU, Efudex, Adrucil, Carac
Chemical Name 5-fluoro-1H-pyrimidine-2,4-dione
Canonical SMILES C1=C(C(=O)NC(=O)N1)F
Formula C4H3FN2O2 M.Wt 130.1
Solubility ≥6.5 mg/mL in DMSO, <2.51 mg/mL in EtOH, ≥10.04 mg/mL in H2O with ultrasonic and warming Storage Store at -20°C
Physical Appearance A solid Shipping Condition Evaluation sample solution : ship with blue ice.All other available size: ship with RT , or blue ice upon request
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.


Fluorouracil (Adrucil), a heterocyclic aromatic organic compound, is a potent anticancer agent widely used for the treatment of solid tumors, including breast cancer, ovarian cancer, head and neck cancer, and colon cancer. As an analogue of uracil, fluorouracil has a fluorine atom replacing the hydrogen atom at the C-5 position. Due to its similar chemical structure to DNA and RNA, fluorouracil and metabolites exert strong anticancer activities through incorporation into DNA and RNA and inhibition of thymidylate synthase (TS). Fluorouracil is metabolized into fluorodeoxyuridine monophosphate (FdUMP), which inhibits TS by forming a stable complex with it and subsequently suppresses the production of deoxythymidine monophosphate (dTMP), an essential enzyme involved in DNA replication and repair, leading to cytotoxicity and cell death.


Ning Zhang, Ying Yin, Shen-Jie Xu and Wei-Shan Chen. 5-Fluorouracil: mechanisms of resistance and reversal strategies.  Molecules 2008, 13, 1551-1569

Michael D. Wyatt and David M. Wilson III. Participation of DNA repair in the response to 5-fluorouracil. Cell Mol Life Sci. 2009; 66(5): 788-799