Fluorouracil (5-Fluoracil, 5-FU)

Catalog No.S1209 Synonyms: NSC 19893

Fluorouracil (5-Fluoracil, 5-FU) Chemical Structure

Molecular Weight(MW): 130.08

Fluorouracil (5-Fluoracil, 5-FU) is a DNA/RNA synthesis inhibitor, which interrupts nucleotide synthetic by inhibiting thymidylate synthase (TS) in tumor cells.

Size Price Stock Quantity  
In DMSO USD 134 In stock
USD 147 In stock
USD 220 In stock
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Cited by 13 Publications

3 Customer Reviews

  • Quantitative RT-PCR analysis for mTOR levels in ASZ001 cells treated with ITRA, VISMO, or 5-FU. Data represent the mean ± SD of three independent experiments. * p < 0.05, compared to nontreated controls; ns, statistically not significant.

    J Invest Dermatol, 2018, 138(8):1716-1725. Fluorouracil (5-Fluoracil, 5-FU) purchased from Selleck.

    DNA-PKcs suppression mediated ROS production and GSH content in HepG2 cells exposed to CDDP and 5-Fu. a DNA-PKcs inhibition promoted ROS production in HepG2 cells treated with indicated concentrations of CDDP and 5-Fu. DCFH-DA fluorescent analysis was performed to assess the ROS level. Data presented were mean ?SD of three independent experiments.

    Mol Cell Biochem 2014 10.1007/s11010-014-2253-6. Fluorouracil (5-Fluoracil, 5-FU) purchased from Selleck.

  • EdU staining of RBE cells treated with OSI-027 (6.25 μM) and/or 5-FU (6.25 μg/mL) was performed by using Click-iT EdU Imaging Kit. The percentages of EdU-positive cells have been provided in the right panel.

    Eur Rev Med Pharmacol Sci, 2016, 20(9):1699-706.. Fluorouracil (5-Fluoracil, 5-FU) purchased from Selleck.

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Biological Activity

Description Fluorouracil (5-Fluoracil, 5-FU) is a DNA/RNA synthesis inhibitor, which interrupts nucleotide synthetic by inhibiting thymidylate synthase (TS) in tumor cells.
Thymidylate synthase [1]
(Tumor cells)
In vitro

Adrucil is an analogue of uracil with a fluorine atom at the C-5 position in place of hydrogen. It rapidly enters the cell using the same facilitated transport mechanism as uracil. Adrucil is converted intracellularly to several active metabolites: fluorodeoxyuridine monophosphate (FdUMP), fluorodeoxyuridine triphosphate (FdUTP) and fluorouridine triphosphate (FUTP). The Adrucil metabolite FdUMP binds to the nucleotide-binding site of TS, forming a stable ternary complex with the enzyme and CH2THF, thereby blocking binding of the normal substrate dUMP and inhibiting dTMP synthesis. Metabolite of Adrucil also can be misincorporated into DNA, leading to DNA strand breaks and cell death. The pro-apoptosis effects of Adrucil may be related to its activation of tumor suppressor p53. Loss of p53 function reduces cellular sensitivity to Adrucil. [1] Adrucil is able to inhibit the survival and induce apoptosis of a board range of cancer cells. Adrucil suppresses viabilities of the nasopharyngeal carcinoma cell line CNE2 and HONE1 [2], pancreatic cancer cell lines Capan-1 [3], and human colon carcinoma cell line HT-29 [4] with IC50 of 9 μg/mL, 3 μg/mL, 0.22 μM, 2.5 μM, respectively.

Cell Data
Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
MCF-7 Mn;PS5Jwf3SqIFnubIljcXSrb36gRZN{[Xl? Mn;oO|LDqGkEoB?= M2nOeWlEPTB;MkCg{txoN22O MmC4NlQxQTVzN{[=
HL-60 NES4XHNIem:5dHigTY5pcWKrdHnvckBCe3OjeR?= M1L4N|czyqCqwrC= Mm\WTWM2OD16Lk[wNUDPxGdxbVy= NVP1VpBxOjRyOUWxO|Y>
NCI-H292 NX76e49jT3Kxd4ToJGlvcGmkaYTpc44hSXO|YYm= MWK3NuKhcMLi NWrKVmVlUUN3ME6gNlUh|rypL33M NFXDNoMzPDB7NUG3Oi=>

... Click to View More Cell Line Experimental Data

In vivo Adrucil is widely used in the treatment of a range of cancers, including colorectal and breast cancers. [1] 100mg/kg Adrucil significantly suppresses tumor growth of murine colon carcinomas Colon 38 with tumor-doubling time (TD), growth-delay factor (GDF), and T/C of 26.5 days, 4.4, and 14%. [5]


Cell Research:[4]
+ Expand
  • Cell lines: Human colon carcinoma cell line HT-29
  • Concentrations: ~25 μM
  • Incubation Time: 7 days
  • Method: Growth inhibition is measured after treatment of cells with Adrucil for 7 days in 96-well plates (4000 HT-29 cells/well in RPMI 1640 medium with 10% dialyzed fetal bovine serum); increasing concentrations of Adrucil are added after allowing for cell attachment overnight. At the end of incubation, cells are rinsed three times with phosphate-buffered saline (pH 7.4), fixed with 10% trichloroacetic acid for 60 min at 4 ℃, washed five times with deionized water, and stained with 0.4% sulforhoda-mine B solution for 15 min at room temperature. Unstained sulforhodamine B is removed by rinsing with 1% glacial acetic acid. Afterwards, stained cell proteins are dried and dissolved with 10 mM Tris-HCl. The optical density value is measured using a detector at 540 nm wavelength.
    (Only for Reference)
Animal Research:[5]
+ Expand
  • Animal Models: Murine colon carcinomas Colon 38
  • Formulation: PBS
  • Dosages: 100 mg/kg
  • Administration: i.p. weekly
    (Only for Reference)

Solubility (25°C)

In vitro DMSO 26 mg/mL (199.87 mM)
Water Insoluble
Ethanol Insoluble
In vivo Add solvents to the product individually and in order(Data is from Selleck tests instead of citations):
saline (warming)
For best results, use promptly after mixing.

* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.

Chemical Information

Molecular Weight 130.08


CAS No. 51-21-8
Storage powder
in solvent
Synonyms NSC 19893

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Clinical Trial Information

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT03196180 Not yet recruiting High Grade Cervical Intraepithelial Neoplasia|p16 Positive Neoplastic Cells Present National Cancer Institute (NCI) February 28 2019 Phase 1
NCT03607643 Not yet recruiting Cancer of Pancreas|Cancer of Liver|Cancer of Rectum|Cancer of Colon|Cancer Gall Bladder|Myeloma Multiple|Glioblastoma Multiforme Leaf Vertical Inc. January 15 2019 Phase 1|Phase 2
NCT03698461 Not yet recruiting Colorectal Neoplasms|Neoplasm Metastasis|Colonic Neoplasms|Rectal Neoplasms Asan Medical Center|Hoffmann-La Roche December 2018 Phase 2
NCT03203525 Not yet recruiting Liver Cancer M.D. Anderson Cancer Center|NovoCure Ltd. December 2018 Phase 1
NCT03727074 Not yet recruiting Actinic Keratosis (AK) Sol-Gel Technologies Ltd. December 2018 Phase 3
NCT03721653 Not yet recruiting Metastatic Colorectal Cancer Gruppo Oncologico del Nord-Ovest|Roche Pharma AG November 15 2018 Phase 2

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Frequently Asked Questions

  • Question 1:

    I was wondering if the product #s1209 (5-fluorouracil) is suitable to inject into mice ?

  • Answer:

    S1209 is suitable to inject (I.P.) into mice as indicating in this paper: http://www.ncbi.nlm.nih.gov/pubmed/8995503.

DNA/RNA Synthesis Signaling Pathway Map

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID