CAS No. 51-21-8
Batch:
Purity:99.97
Chemical Structure
Check the
5-Fluorouracil (5-FU)
product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.
| IUPAC Name | 5-fluoro-1H-pyrimidine-2,4-dione | |
|---|---|---|
| CAS Number | 51-21-8 | |
| Molecular Formula |
C4H3FN2O2 |
|
| Molecular Weight (MW) | 130.08 | |
| SMILES | C1=C(C(=O)NC(=O)N1)F | |
| InChIKey | GHASVSINZRGABV-UHFFFAOYSA-N |
5-Fluorouracil (5-FU) is a pyrimidine analog and antimetabolite that inhibits thymidylate synthase (TS), leading to the suppression of pyrimidine nucleotide synthesis. By blocking TS and incorporating fluoronucleotides into RNA and DNA, 5-FU disrupts nucleic acid processing and DNA replication. This inhibition impairs cellular proliferation and triggers apoptotic cell death pathways in susceptible cancer cell types. [1]
Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
| Solvent | Solubility & Note |
|---|---|
| DMSO |
26 mg/mL
(199.87 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.) |
| Water | 10 mg/mL |
| Ethanol | Insoluble |
| DMSO |
26 mg/mL
(199.87 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.) |
| Water | 10 mg/mL |
| Ethanol | Insoluble |
| DMSO |
26 mg/mL
(199.87 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.) |
| Water | 10 mg/mL |
| Ethanol | Insoluble |
| DMSO |
100 mg/mL
(768.75 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.) |
| Water | 8 mg/mL |
| Ethanol | Insoluble |
| DMSO |
26 mg/mL
(199.87 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.) |
| Water | Insoluble |
| Ethanol | Insoluble |
Q: Why does a DMSO stock precipitate in media/saline?
A: It is caused by unheated aqueous media (supersaturation), local solvent shock, or incorrect mixing sequence.
How to fix it?
- Preheat media/saline to 37°C.
- Mix rapidly (pipette/vortex) upon addition.
- For complex mixes, always add the aqueous phase last.
- Re-dissolve minor precipitates with a 37°C water bath and sonication (≤30 min).
Pre-aliquoted for Longevity: Solid-state aliquots offer significantly longer shelf life compared to stock solutions, ensuring maximum stability for every use.
Looking for a specific aliquot size? Reach out to your local sales representative or contact us at orders@selleckchem.com.
- 5-Fluorouracil (5-FU) Mechanism of Action: Thymidylate Synthase Inhibition in Colorectal Cancer Cells Research
- 5-Fluorouracil (5-FU) Clinical Trials
- 5-Fluorouracil (5-FU) Working Concentration | Cell Culture | Treatment
- 5-Fluorouracil (5-FU) Solubility in DMSO
- 5-Fluorouracil (5-FU) Storage
- 5-Fluorouracil (5-FU) Stability
- 5-Fluorouracil (5-FU) Combination Database
- 5-Fluorouracil (5-FU) Molecular Weight
- 5-Fluorouracil (5-FU) SMILES
- 5-Fluorouracil (5-FU) Chemical Structure (2D and 3D)
- 5-Fluorouracil (5-FU) IC50 for Cell-based and Cell-free Assays
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- 5-Fluorouracil (5-FU) SDS｜MSDS
Note: Technical data last updated: Sep 1, 2026.