EIDD-2749
Based on 5 publication(s) in Google Scholar
EIDD-2749 (4'-Fluorouridine) is an orally active RdRp inhibitor. EIDD-2749 effectively blocks the replication of RSV and SARS-CoV-2. EIDD-2749 also exhibits activity against HCV and lymphocytic choriomeningitis virus (LCMV). EIDD-2749 is a promising oral therapeutic candidate for COVID-19 and is also suitable for research on other RNA viruses.
For research use only. We do not sell to patients.
- Purity: 99.86%
- CAS No.: 1613589-24-4
- Formula: C9H11FN2O6
- Molecular Weight:262.19
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Storage:Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 6 months , -20°C, 1 month
To place orders, for customer services and technical support, please contact: MedChemExpress USA
Tel: 609-228-6898 E-mail: [email protected] [email protected]
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Biological Activity
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Chemical Information
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Solvent & Solubility
- Purity & Documentation
- References
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Help & FAQs
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Publications Citing Use of MedChemExpress (MCE) EIDD-2749
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Biological Activity
EIDD-2749 induces a delayed stalling of phosphodiester bond formation by RSV and SARS-CoV-2 RdRP[1].
EIDD-2749 is rapidly anabolizes, metabolically stable, and potently antiviral in disease-relevant well-differentiated HAE cultures[1].
EIDD-2749 shows a ≥17-fold increase in anti-RSV potency relative to that on HEp-2 cells; however, the low cytotoxicity levels remains unchanged (CC50 169 mM), resulting in a high SI (SI = EC50/CC50) of ≥1877[1].
EIDD-2749 inhibits SARS-CoV-2 with an EC50 value of 0.2-0.6 M[2].
EIDD-2749 has an EC50 of 1.86 μM in theVero E6 cell line, cytotoxicity with a CC50 of 380 μM, and stability in human plasma[3].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
EIDD-2749 shows high efficacious to SARS-CoV-2 infection and is effective with a single daily dose versus molnupiravir administered twice daily in vivo[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:Balb/cJ mice (RSV infection model)[1].
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Dosage:0.2, 1, 5 mg/kg
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Administration:Oral administration; single daily for 4 days
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Result:Resulted in a statistically significant reduction in lung virus load.
Chemical Information
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CAS No. 1613589-24-4
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Appearance Solid
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Molecular Weight 262.19
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Formula C9H11FN2O6
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Color White to yellow
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SMILES
O=C1NC(N([C@@H]2O[C@@](CO)(F)[C@@H](O)[C@H]2O)C=C1)=O
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Synonyms
4'-FlU; 4'-Fluorouridine
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month
Publications (5)
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Journal Impact Factor
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Most Recent
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Nature
2026 Feb;650(8103):961-969. PMID: 41501462 -
Antiviral Res
2025 Apr:236:106114. PMID: 39954869 -
Antimicrob Agents Chemother
The nucleoside analog 4'-fluorouridine suppresses the replication of multiple enteroviruses by targeting 3D polymerase. [Abstract]2024 Jun 5;68(6):e0005424. PMID: 38687016 -
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Solvent & Solubility
DMSO : 25 mg/mL (95.35 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
H2O : 10 mg/mL (38.14 mM; ultrasonic and warming and heat to 60°C)
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
Select the appropriate dissolution method based on your experimental animal and administration route.
- For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
- To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for In Vivo experiments, it is recommended to prepare freshly and use it on the same day.
- The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.
Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline
Solubility: ≥ 2.5 mg/mL (9.54 mM); Clear solution
This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.
Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)
Solubility: ≥ 2.5 mg/mL (9.54 mM); Clear solution
This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
Please enter the basic information of animal experiments:
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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
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%DMSO +
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
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%+
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+%Tween-80 + +
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%Saline +
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Working solution concentration: 0.22 mg/mL
Method for preparing stock solution: mg drug dissolved in μL DMSO. Stock solution concentration: mg/mL.
1. Take μL DMSO stock solution;
2. Add μL .
μL , mix evenly;
3. Then add μL Tween 80, mix evenly;
4. Then add μL
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation
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Data Sheet (279 KB)
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SDS (252 KB)
- English - EN (252 KB)
- Français - FR (252 KB)
- Deutsch - DE (252 KB)
- Norwegian - NO (252 KB)
- Español - ES (252 KB)
- Swedish - SV (252 KB)
- Italian - IT (252 KB)
- Korean - KR (252 KB)
- Portuguese - PT (252 KB)
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Handling Instructions (2659 KB)
References
Complete Stock Solution Preparation Table
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
| Optional Solvent | Concentration Solvent Mass | 1 mg | 5 mg | 10 mg | 25 mg |
|---|---|---|---|---|---|
| H2O / DMSO | 1 mM | 3.8140 mL | 19.0701 mL | 38.1403 mL | 95.3507 mL |
| 5 mM | 0.7628 mL | 3.8140 mL | 7.6281 mL | 19.0701 mL | |
| 10 mM | 0.3814 mL | 1.9070 mL | 3.8140 mL | 9.5351 mL | |
| 15 mM | 0.2543 mL | 1.2713 mL | 2.5427 mL | 6.3567 mL | |
| 20 mM | 0.1907 mL | 0.9535 mL | 1.9070 mL | 4.7675 mL | |
| 25 mM | 0.1526 mL | 0.7628 mL | 1.5256 mL | 3.8140 mL | |
| 30 mM | 0.1271 mL | 0.6357 mL | 1.2713 mL | 3.1784 mL | |
| DMSO | 40 mM | 0.0954 mL | 0.4768 mL | 0.9535 mL | 2.3838 mL |
| 50 mM | 0.0763 mL | 0.3814 mL | 0.7628 mL | 1.9070 mL | |
| 60 mM | 0.0636 mL | 0.3178 mL | 0.6357 mL | 1.5892 mL | |
| 80 mM | 0.0477 mL | 0.2384 mL | 0.4768 mL | 1.1919 mL |
* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.
EIDD-2749 Related Classifications
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