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> Favipiravir [259793-96-9]

Favipiravir [259793-96-9]

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Cat# HY-14768-10mg

Size : 10mg

Brand : MedChemExpress

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Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass
=
Concentration
×
Volume
×
Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
Volume (final)

V2

In Vivo:

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 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.

  • Protocol 1

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 2.5 mg/mL (15.91 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.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: ≥ 2.5 mg/mL (15.91 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.
  • Protocol 3

    Add each solvent one by one:  10% DMSO    90% Corn Oil

    Solubility: ≥ 2.5 mg/mL (15.91 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown). If the continuous dosing period exceeds half a month, please choose this protocol carefully.

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL Corn oil, and mix evenly.

  • Protocol 4

    Add each solvent one by one:  5% DMSO    40% PEG300    5% Tween-80    50% Saline

    Solubility: ≥ 2.5 mg/mL (15.91 mM); Clear solution

  • Protocol 5

    Add each solvent one by one:  5% DMSO    95% (20% SBE-β-CD in Saline)

    Solubility: ≥ 2.5 mg/mL (15.91 mM); Clear solution

For the following dissolution methods, please prepare the working solution directly. It is recommended to prepare fresh solutions and use them promptly within a short period of time.
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.

  • Protocol 1

    Add each solvent one by one:  PBS

    Solubility: 4.55 mg/mL (28.96 mM); Clear solution; Need ultrasonic

In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
DMSO +
% 
+
%
Tween-80 +
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
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).
Calculation results:
Working solution concentration: mg/mL
Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
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.

  • [1]. Furuta Y, et al. Favipiravir (T-705), a novel viral RNA polymerase inhibitor. Antiviral Res. 2013 Nov;100(2):446-54.  [Content Brief]

    [2]. Rocha-Pereira J, et al. Favipiravir (T-705) inhibits in vitro norovirus replication. Biochem Biophys Res Commun. 2012 Aug 10;424(4):777-80.  [Content Brief]

The antiviral activity of Favipiravir (T 705) is determined using an MTS-based CPE reduction assay in the MNV/RAW 264.7 cell line. To this end, RAW 264.7 cells are seeded (1×104 cells/well) in 96-well plates and infected with MNV at an MOI of 0,001 in the presence (or absence) of a dilution series of Favipiravir (T 705) (3.13-200 μg/mL). Following 3 days of incubation, i.e. until complete CPE is observed in infected untreated cells, cell culture supernatants are collected for quantification of viral RNA load by quantitative RT-PCR (qRT-PCR). For the MTS reduction assay an MTS/Phenazine methosulphate (PMS) stock solution (2 mg/mL MTS and 46 g/mL PMS in PBS at pH 6-6.5) is diluted 1/20 in MEM. To each well, 75 μL of MTS/PMS solution is added and the optical density (OD) is read at 498 nm 2 h later. The % CPE reduction is calculated as [(ODtreated)MNW−ODVC]/[ODCC-ODVC]×100, where ODCC represents the OD of the uninfected untreated cells, whereas ODVC and (ODtreated)CC represent the OD of infected untreated cells and virus-infected cells treated with a compound concentration, respectively. The EC50 is defined as the compound concentration that protected 50% of cells from virus-induced CPE. Adverse effects of the molecule on the host cell are also assessed by means of the MTS-method, by exposing uninfected cells to the same concentrations of Favipiravir for 3 days. The % cell viability is calculated as (ODtreated/ODCC)×100, where ODCC is the OD of uninfected untreated cells and ODtreated are uninfected cells treated with compound. The CC50 is defined as the compound concentration that reduces the number of viable cells by 50%. The selectivity index (SI) is calculated as CC50/EC50.

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Mice
Favipiravir (T 705) has also been shown to protect mice against lethal infection by a variety of influenza virus strains. When Favipiravir is orally administered 2 or 4 times a day for 5 days in mice infected with lethal doses of influenza virus A/Victoria/3/75(H3N2), A/Osaka/5/70(H3N2) or A/Duck/MN/1525/81(H5N1).

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

  • [1]. Furuta Y, et al. Favipiravir (T-705), a novel viral RNA polymerase inhibitor. Antiviral Res. 2013 Nov;100(2):446-54.  [Content Brief]

    [2]. Rocha-Pereira J, et al. Favipiravir (T-705) inhibits in vitro norovirus replication. Biochem Biophys Res Commun. 2012 Aug 10;424(4):777-80.  [Content Brief]

  • [1]. Furuta Y, et al. Favipiravir (T-705), a novel viral RNA polymerase inhibitor. Antiviral Res. 2013 Nov;100(2):446-54.

    [2]. Rocha-Pereira J, et al. Favipiravir (T-705) inhibits in vitro norovirus replication. Biochem Biophys Res Commun. 2012 Aug 10;424(4):777-80.

* 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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
H2O / DMSO 1 mM 6.3654 mL 31.8269 mL 63.6537 mL 159.1343 mL
5 mM 1.2731 mL 6.3654 mL 12.7307 mL 31.8269 mL
10 mM 0.6365 mL 3.1827 mL 6.3654 mL 15.9134 mL
15 mM 0.4244 mL 2.1218 mL 4.2436 mL 10.6090 mL
20 mM 0.3183 mL 1.5913 mL 3.1827 mL 7.9567 mL
25 mM 0.2546 mL 1.2731 mL 2.5461 mL 6.3654 mL
30 mM 0.2122 mL 1.0609 mL 2.1218 mL 5.3045 mL
DMSO 40 mM 0.1591 mL 0.7957 mL 1.5913 mL 3.9784 mL
50 mM 0.1273 mL 0.6365 mL 1.2731 mL 3.1827 mL
60 mM 0.1061 mL 0.5304 mL 1.0609 mL 2.6522 mL
80 mM 0.0796 mL 0.3978 mL 0.7957 mL 1.9892 mL
100 mM 0.0637 mL 0.3183 mL 0.6365 mL 1.5913 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.

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  • Cell Cycle/DNA Damage Anti-infection
  • DNA/RNA Synthesis Influenza Virus SARS-CoV Bacterial
Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

Favipiravir259793-96-9T-705T705T 705DNA/RNA SynthesisInfluenza VirusSARS-CoVBacterialSARS coronavirusInhibitorinhibitorinhibit

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