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2-Thiouridine (s2U) is a naturally occurring modified nucleobase present in transfer RNAs that stabilizes U:A base pairing while modestly destabilizing U:G wobble interactions. 2-Thiouridine influences codon–anticodon recognition, translational accuracy, and RNA conformational dynamics, and is extensively used in studies of nucleic acid structure, RNA biology, and the engineering of functional RNA-based biomolecules.

| Pack Size | Price | USA Warehouse | Global Warehouse | Quantity |
|---|---|---|---|---|
| 25 mg | $29 | - | In Stock | |
| 1 mL x 10 mM (in DMSO) | $29 | - | In Stock |
| Description | 2-Thiouridine (s2U) is a naturally occurring modified nucleobase present in transfer RNAs that stabilizes U:A base pairing while modestly destabilizing U:G wobble interactions. 2-Thiouridine influences codon–anticodon recognition, translational accuracy, and RNA conformational dynamics, and is extensively used in studies of nucleic acid structure, RNA biology, and the engineering of functional RNA-based biomolecules. |
| In vitro | In viral replication assays, 2-Thiouridine inhibited the replication of several positive-strand RNA viruses (DENV2, ZIKV, SARS-CoV, SARS-CoV-2) with effective concentrations ranging from 0.625 to 40 μM [1]. |
| In vivo | In DENV2-infected mice, oral administration of 2-thiouridine (50-150 mg/kg, twice daily) prolonged survival and reduced viral RNA loads in the serum and spleen. In SARS-CoV-2 mouse models, treatment via intravenous injection (2-20 mg/kg, once daily) or high-dose oral administration (300 mg/kg, twice daily) for 5 days resulted in increased survival rates, lower lung viral titers, and reduced levels of inflammatory cytokines [4]. |
| Molecular Weight | 260.27 |
| Formula | C9H12N2O5S |
| Cas No. | 20235-78-3 |
| Smiles | O[C@H]1[C@@H](O[C@H](CO)[C@H]1O)N2C(=S)NC(=O)C=C2 |
| Storage | store at low temperature | In solvent: -80°C for 1 year | ||||||||||||||||||||
| Solubility Information | H2O: 8 mg/mL (30.74 mM), Sonication is recommended. Ethanol: 2 mg/mL (7.68 mM), Sonication is recommended. PBS (pH 7.2): 5 mg/mL (19.21 mM), Sonication is recommended. DMF: 10 mg/mL (38.42 mM), Sonication is recommended. DMSO: 40 mg/mL (153.69 mM), Sonication is recommended. | ||||||||||||||||||||
Solution Preparation Table | |||||||||||||||||||||
PBS (pH 7.2)/H2O/DMF/DMSO
H2O/DMF/DMSO
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Dissolve 2 mg of the compound in 100 μL DMSO
to obtain a stock solution at a concentration of 20 mg/mL . If the required concentration exceeds the compound's known solubility, please contact us for technical support before proceeding.
1) Add 100 μL of the DMSO
stock solution to 400 μL PEG300
and mix thoroughly until the solution becomes clear.
2) Add 50 μL Tween 80 and mix well until fully clarified.
3) Add 450 μL Saline,PBS or ddH2O
and mix thoroughly until a homogeneous solution is obtained.
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