Favipiravir sodium
Based on 51 publication(s) in Google Scholar
Favipiravir (T-705) sodium is an inhibitor of viral RNA polymerase (RNA polymerase), which is converted into its active form Favipiravir-ribofuranosyl-5′-triphosphate (RTP). Favipiravir-RTP inhibits the activity of influenza virus RNA-dependent RNA polymerase (RdRP) with an IC50 of 341 nM.
For research use only. We do not sell to patients.
- CAS No.: 1366418-99-6
- Formula: C5H3FN3NaO2
- Molecular Weight:179.08
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
Publications Citing Use of MedChemExpress (MCE) Favipiravir sodium
More- Nat Commun. 2026 Feb 19. [Abstract]
- NPJ Digit Med. 2025 Nov 21;8(1):712. [Abstract]
- Acta Pharm Sin B. 2025 Aug;15(8):4156-4173. [Abstract]
- Nucleic Acids Res. 2021 Jan 8;49(D1):D1113-D1121. [Abstract]
- Int J Biol Sci. 2020 Oct 16;16(16):3100-3115. [Abstract]
- Emerg Microbes Infect. 2025 Dec;14(1):2564308. [Abstract]
- Cell Chem Biol. 2022 Jul 21;29(7):1113-1125.e6. [Abstract]
- Eur J Med Chem. 2024 Aug 3:277:116737. [Abstract]
- Bioeng Transl Med. 2020 Dec 1;6(1):e10196. [Abstract]
- Int J Mol Sci. 2023 Feb 2;24(3):2849. [Abstract]
- Front Pharmacol. 2019 Oct 16;10:1203. [Abstract]
- mBio. 2020 Aug 20;11(4):e01833-20. [Abstract]
- Bioorg Chem. 2024 Mar:144:107139. [Abstract]
- Antimicrob Agents Chemother. 2020 Jun 23;64(7):e00222-20. [Abstract]
- Antimicrob Agents Chemother. 2019 May 24;63(6). pii: e00003-19. [Abstract]
- Virol Sin. 2025 Mar 25:S1995-820X(25)00031-8. [Abstract]
- Virol Sin. 2024 Aug 19:S1995-820X(24)00134-2. [Abstract]
- Antiviral Res. 2024 Jun 4:105923. [Abstract]
- Antiviral Res. 2023 Oct:218:105703. [Abstract]
- Antiviral Res. 2020 Dec;184:104955. [Abstract]
- Antiviral Res. 2020 Jun;178:104786. [Abstract]
- Antiviral Res. 2018 Jan:149:34-40. [Abstract]
- Sci Rep. 2021 Sep 8;11(1):17810. [Abstract]
- J Virol. 2021 Sep 9;95(19):e0092221. [Abstract]
- J Antimicrob Chemother. 2025 Oct 3;80(10):2807-2813. [Abstract]
- Viruses. 2024 Aug 20;16(8):1332. [Abstract]
- Viruses. 2023 Jan 15;15(1):244. [Abstract]
- Viruses. 2021 Oct 11;13(10):2047. [Abstract]
- Viruses. 2021 Jun 28;13(7):1255. [Abstract]
- Viruses. 2020 Jun 10;12(6):628. [Abstract]
- Viruses. 2018 Aug 16;10(8). pii: E433. [Abstract]
- Vaccine. 2019 Aug 2;37(33):4686-4693. [Abstract]
- ChemMedChem. 2026 May 27;21(10):e70314. [Abstract]
- Pathogens. 2026 Feb;15(2):169.
- BMC Vet Res. 2019 Sep 2;15(1):316. [Abstract]
- Virology. 2023 Aug:585:21-31. [Abstract]
- Virology. 2020 Jun;545:1-9. [Abstract]
- Virology. 2019 Oct:536:58-67. [Abstract]
- Biopharm Drug Dispos. 2021 May;42(5):218-225. [Abstract]
- Anal Sci. 2021 Sep 10;37(9):1301-1304. [Abstract]
- J Virol Methods. 2021 Dec:298:114283. [Abstract]
- J Infect Chemother. 2022 Jan;28(1):73-77. [Abstract]
- Res Sq. 2025 Dec 18.
- Auburn University. 2025 Aug 9.
- bioRxiv. 2025 Jan 25:2025.01.24.633564. [Abstract]
- SSRN. 2023 Dec 20.
- Research Square Preprint. 2023 Oct 12.
- Research Square Preprint. 2021 Oct.
- Research Square Preprint. 2021 Apr.
- Universidade de São Paulo. 2020 Sep.
- bioRxiv. 2020 Apr.
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Others
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Microbiological Assay
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Microbiological Assay
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Cell Proliferation/Viability Assay
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IF
All DNA/RNA Synthesis Isoforms
More
Biological Activity
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RNA Polymerase |
Chemical Information
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CAS No. 1366418-99-6
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Molecular Weight 179.08
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Formula C5H3FN3NaO2
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SMILES
O=C(C1=NC(F)=CN=C1O[Na])N
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Synonyms
T-705 sodium
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Please store the product under the recommended conditions in the Certificate of Analysis.
Publications (51)
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Journal Impact Factor
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Most Recent
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Nat Commun
Baloxavir outperforms oseltamivir, favipiravir, and amantadine in treating lethal influenza A(H5N1) HA clade 2.3.4.4b infection in mice. [Abstract]2026 Feb 19. PMID: 41714318 -
NPJ Digit Med
Predictive modeling & mechanistic validation of synergistic pimodivir combinations for anti-influenza therapy via PB2cap affinity boost. [Abstract]2025 Nov 21;8(1):712. PMID: 41272280 -
Acta Pharm Sin B
A novel C-3-substituted oleanolic acid benzyl amide derivative exhibits therapeutic potential against influenza A by targeting PA-PB1 interactions and modulating host macrophage inflammation. [Abstract]2025 Aug;15(8):4156-4173. PMID: 40893672 -
Nucleic Acids Res
COVID19 Drug Repository: text-mining the literature in search of putative COVID19 therapeutics. [Abstract]2021 Jan 8;49(D1):D1113-D1121. PMID: 33166390 -
Int J Biol Sci
NDRG2 ablation reprograms metastatic cancer cells towards glutamine dependence via the induction of ASCT2. [Abstract]2020 Oct 16;16(16):3100-3115. PMID: 33162818 -
Emerg Microbes Infect
Efficient airborne transmission of influenza D virus in ferret models and serological evidence of human exposure in Northeast China. [Abstract]2025 Dec;14(1):2564308. PMID: 41069204
Favipiravir sodium purchased from MedChemExpress. Usage Cited in: Emerg Microbes Infect. 2025 Dec;14(1):2564308. [Abstract]
Drug susceptibility profiles of Favipiravir were assessed using a viral yield reduction assay in MDCK cells. Cells were infected with IDV and IAV (MOI = 0.1), followed by removal of the virus inoculum and treatment with the drugs. Supernatants from IDV and Influenza A virus (IAV) infections were collected at 72 and 48 hpi, respectively, and viral titres were determined in MDCK cells. Antiviral activity (%) was calculated relative to virus-free and drug-free controls.
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Cell Chem Biol
Identifying enhancers of innate immune signaling as broad-spectrum antivirals active against emerging viruses. [Abstract]2022 Jul 21;29(7):1113-1125.e6. PMID: 35728599 -
Eur J Med Chem
Optimization of potent, broad-spectrum, and specific anti-influenza compounds targeting RNA polymerase PA-PB1 heterodimerization. [Abstract]2024 Aug 3:277:116737. PMID: 39153334 -
Bioeng Transl Med
IDentif.AI: Rapidly optimizing combination therapy design against severe Acute Respiratory Syndrome Coronavirus 2 (SARS-Cov-2) with digital drug development. [Abstract]2020 Dec 1;6(1):e10196. PMID: 33532594 -
Int J Mol Sci
Evaluation of In Vitro Distribution and Plasma Protein Binding of Selected Antiviral Drugs (Favipiravir, Molnupiravir and Imatinib) against SARS-CoV-2. [Abstract]2023 Feb 2;24(3):2849. PMID: 36769193 -
Front Pharmacol
An Improved Enzyme-Linked Focus Formation Assay Revealed Baloxavir Acid as a Potential Antiviral Therapeutic Against Hantavirus Infection. [Abstract]2019 Oct 16;10:1203. PMID: 31680975
Favipiravir sodium purchased from MedChemExpress. Usage Cited in: Front Pharmacol. 2019 Oct 16;10:1203. [Abstract]
Vero E6 cells in 12-well plates were infected with HTNV at an FFU of 30/well (T-705; Favipiravir) and incubated with a CMC overlay supplemented with serial two-fold dilutions of inhibitors. At 5 dpi, the foci were counted and calculated. These experiments were performed independently at least three times with similar results.
Favipiravir sodium purchased from MedChemExpress. Usage Cited in: Front Pharmacol. 2019 Oct 16;10:1203. [Abstract]
Inhibitory effects of T-705 (Favipiravir) and BXA (Baloxavir) on HTNV replication, as measured by FFA. Vero E6 cells were infected with HTNV at an FFU of 30/well (T-705) or 50/well (BXA) and treated with serial two-fold dilutions of inhibitors. The foci were counted 5 dpi. Each point represents the mean and SD of three independent experiments.
Favipiravir sodium purchased from MedChemExpress. Usage Cited in: Front Pharmacol. 2019 Oct 16;10:1203. [Abstract]
Cell viability as a percentage of the control cell (treated with DMSO for T-705 or PBS for BXA) viability in uninfected Vero E6 cells incubated for 72 h post-T-705 (Favipiravir)/BXA (Baloxavir) treatment. Each point represents the mean and SD of three independent experiments.
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mBio
2020 Aug 20;11(4):e01833-20. PMID: 32820005 -
Bioorg Chem
Optimization and biological evaluation of l-DOPA derivatives as potent influenza PAN endonuclease inhibitors with multi-site binding characteristics. [Abstract]2024 Mar:144:107139. PMID: 38262086 -
Antimicrob Agents Chemother
Development of Novel Anti-influenza Thiazolides with Relatively Broad-Spectrum Antiviral Potentials. [Abstract]2020 Jun 23;64(7):e00222-20. PMID: 32312780 -
Antimicrob Agents Chemother
2019 May 24;63(6). pii: e00003-19. PMID: 30885901 -
Virol Sin
Development of a reporter HBoV1 strain for antiviral drug screening and life cycle studies. [Abstract]2025 Mar 25:S1995-820X(25)00031-8. PMID: 40147635 -
Virol Sin
Antiviral activity of vitamin D derivatives against severe fever with thrombocytopenia syndrome virus in vitro and in vivo. [Abstract]2024 Aug 19:S1995-820X(24)00134-2. PMID: 39168248 -
Antiviral Res
2024 Jun 4:105923. PMID: 38844175 -
Antiviral Res
2023 Oct:218:105703. PMID: 37611878 -
Antiviral Res
Antiviral activity and safety of remdesivir against SARS-CoV-2 infection in human pluripotent stem cell-derived cardiomyocytes. [Abstract]2020 Dec;184:104955. PMID: 33091434 -
Antiviral Res
Remdesivir, lopinavir, emetine, and homoharringtonine inhibit SARS-CoV-2 replication in vitro. [Abstract]2020 Jun;178:104786. PMID: 32251767 -
Antiviral Res
Merimepodib, an IMPDH inhibitor, suppresses replication of Zika virus and other emerging viral pathogens. [Abstract]2018 Jan:149:34-40. PMID: 29126899 -
Sci Rep
Interactions of anti-COVID-19 drug candidates with hepatic transporters may cause liver toxicity and affect pharmacokinetics. [Abstract]2021 Sep 8;11(1):17810. PMID: 34497279 -
J Virol
2021 Sep 9;95(19):e0092221. PMID: 34287048 -
J Antimicrob Chemother
Placental transfer of medications to treat COVID-19, molnupiravir, favipiravir and nirmatrelvir/ritonavir, in the ex vivo human cotyledon model. [Abstract]2025 Oct 3;80(10):2807-2813. PMID: 40888812 -
Viruses
Antiviral Activity of Selective Estrogen Receptor Modulators against Severe Fever with Thrombocytopenia Syndrome Virus In Vitro and In Vivo. [Abstract]2024 Aug 20;16(8):1332. PMID: 39205306 -
Viruses
2023 Jan 15;15(1):244. PMID: 36680284 -
Viruses
In Silico Structure-Based Design of Antiviral Peptides Targeting the Severe Fever with Thrombocytopenia Syndrome Virus Glycoprotein Gn. [Abstract]2021 Oct 11;13(10):2047. PMID: 34696477 -
Viruses
Screening and Identification of Lujo Virus Inhibitors Using a Recombinant Reporter Virus Platform. [Abstract]2021 Jun 28;13(7):1255. PMID: 34203149 -
Viruses
Broad-Spectrum Host-Based Antivirals Targeting the Interferon and Lipogenesis Pathways as Potential Treatment Options for the Pandemic Coronavirus Disease 2019 (COVID-19). [Abstract]2020 Jun 10;12(6):628. PMID: 32532085 -
Viruses
2018 Aug 16;10(8). pii: E433. PMID: 30115859 -
Vaccine
2019 Aug 2;37(33):4686-4693. PMID: 29132993 -
ChemMedChem
Streamlined Synthesis and Structure-Activity Relationship Analysis of 2-Amidothiophene-3-Carboxamides Targeting Influenza Polymerase PA-PB1 Heterodimerization. [Abstract]2026 May 27;21(10):e70314. PMID: 42174748 -
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BMC Vet Res
2019 Sep 2;15(1):316. PMID: 31477101
Favipiravir sodium purchased from MedChemExpress. Usage Cited in: BMC Vet Res. 2019 Sep 2;15(1):316. [Abstract]
Comparisons of antiviral effects of T-705 and anti-CDV polyclonal serum. The Vero and DH82 cells were treated with T-705 (156.25 μg/ml), anti-CDV polyclonal serum (1:128) and a combination of T-705 (156.25 μg/ml) and anti-CDV polyclonal serum (1:128) at 0, 12, 24, 36 and 48 h p.i. with CDV-3 and CDV-11 at a MOI of 0.1. The mock groups were treated with DMEM p.i. at the same times. Viral replications in cells were detected by IFA and the mean fluorescence percentages (a, c, e, g) were calculated
Favipiravir sodium purchased from MedChemExpress. Usage Cited in: BMC Vet Res. 2019 Sep 2;15(1):316. [Abstract]
Comparisons of antiviral effects of T-705 and anti-CDV polyclonal serum. The Vero and DH82 cells were treated with T-705 (156.25 μg/ml), anti-CDV polyclonal serum (1:128) and a combination of T-705 (156.25 μg/ml) and anti-CDV polyclonal serum (1:128) at 0, 12, 24, 36 and 48 h p.i. with CDV-3 and CDV-11 at a MOI of 0.1. The mock groups were treated with DMEM p.i. at the same times. The virus titers in supernatant (b, d, f, h) were determined and compared with the viral titers in mock group. All e
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Virology
BCX4430 inhibits the replication of rabies virus by suppressing mTOR-dependent autophagy invitro. [Abstract]2023 Aug:585:21-31. PMID: 37267717 -
Virology
Effectiveness of favipiravir (T-705) against wild-type and oseltamivir-resistant influenza B virus in mice. [Abstract]2020 Jun;545:1-9. PMID: 32174453 -
Virology
The evolution and characterization of influenza A(H7N9) virus under the selective pressure of peramivir. [Abstract]2019 Oct:536:58-67. PMID: 31400550 -
Biopharm Drug Dispos
Favipiravir biotransformation in liver cytosol: Species and sex differences in humans, monkeys, rats, and mice. [Abstract]2021 May;42(5):218-225. PMID: 33754379 -
Anal Sci
Optimization of Analytical Procedure for In-hospital Rapid Quantification of Serum Level of Favipiravir in the Pharmacological Treatment of COVID-19. [Abstract]2021 Sep 10;37(9):1301-1304. PMID: 33612558 -
J Virol Methods
Surface plasmon resonance approach to study drug interactions with SARS-CoV-2 RNA-dependent RNA polymerase highlights treatment potential of suramin. [Abstract]2021 Dec:298:114283. PMID: 34534610 -
J Infect Chemother
Elevated blood favipiravir levels are inversely associated with ferritin levels and induce the elevation of uric acid levels in COVID-19 treatment: A retrospective single-center study. [Abstract]2022 Jan;28(1):73-77. PMID: 34711508 -
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bioRxiv
Combinations of approved oral nucleoside analogues confer potent suppression of alphaviruses in vitro and in vivo. [Abstract]2025 Jan 25:2025.01.24.633564. PMID: 39896535 -
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Purity & Documentation
References
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)