2. Anti-infection
  3. RSV
  4. Ziresovir

Ziresovir  (Synonyms: AK0529; RO-0529)

Cat. No.: HY-109142 Purity: 95.51%
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Ziresovir (AK0529;RO-0529) is a potent, selective, and orally bioavailable respiratory syncytial virus (RSV) fusion (F) protein (RSV F) protein inhibitor. Ziresovir shows anti-RSV activity (EC50=3 nM) and highlights pharmacokinetics in animal species.

For research use only. We do not sell to patients.

Ziresovir Chemical Structure

Ziresovir Chemical Structure

CAS No. : 1422500-60-4

Size Price Stock Quantity
Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO
ready for reconstitution
 USD 338 In-stock
Solution
10 mM * 1 mL in DMSO USD 338 In-stock
Solid
1 mg USD 140 In-stock
5 mg USD 350 In-stock
10 mg USD 550 In-stock
25 mg USD 990 In-stock
50 mg USD 1650 In-stock
100 mg USD 2250 In-stock
200 mg   Get quote  
500 mg   Get quote  

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Based on 3 publication(s) in Google Scholar

Ziresovir Related Antibodies

Top Publications Citing Use of Products

  • Biological Activity

  • Purity & Documentation

  • References

  • Customer Review

Description

Ziresovir (AK0529;RO-0529) is a potent, selective, and orally bioavailable respiratory syncytial virus (RSV) fusion (F) protein (RSV F) protein inhibitor. Ziresovir shows anti-RSV activity (EC50=3 nM) and highlights pharmacokinetics in animal species[1].

IC50 & Target

RSV F protein (respiratory syncytial virus fusion protein)[1] EC50: 3 nM (RSV F)[1]
In Vitro

Ziresovir shows different efficacy in Wild Type (WT) and Mutant Strains RSV with EC50/EC90 values (μM) of 0.003/0.005 (WT), 2.1/10.0 (D486N), and >10/>10 (D489A), respectively[1].
RO-0529 (100 nM; 4 d) inhibits RSV F protein-induced cell–cell fusion process, and suppresses the syncytia formation induced by the RSV F protein[1].

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

Ziresovir Related Antibodies
In Vivo

Ziresovir (12.5 mg/kg, 50 mg/kg; p.o.; twice daily; 4 d) results reduction of RSV titer in mouse lung[1].
Ziresovir (10 mg/kg; p.o.; single dose) exhibits good oral exposure and bioavailability with F(%) of 32% in male Wistar-Han rats[1].
Ziresovir (150 mg/kg; p.o.; single dose) demonstrates a high tissue distribution to lung than plasma in CD-1 Mice[1].
Pharmacokinetics of Ziresovir in male Wistar-Han rats[1]

Dose (mg/kg) AUC0-24h(p.o.) (ng·h/mL) CL (mL/min/kg) T1/2(i.v.) (h) Vss (L/kg) F (%)
2 mg/kg (iv) or 10 mg/kg (po) 906 58 1.2 3.9 32
Pharmacokinetics of Ziresovir in CD-1 Mice[1]
Dose (mg/kg) AUC0-24h(p.o.) (μg·h/L) tissue/lasma AUC0-24h ratio (μg·h/L) T1/2 (h) Tmax (h) Cmax (μg/L)
plasma 8,380 1 1.02 0.25 5090
lung 72,400 8.6 3.31 1 22700

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

Animal Model: Female BALB/c mice infected by RSV[1]
Dosage: 12.5 mg/kg, 50 mg/kg
Administration: Oral gavage; twice daily; 4 days
Result: Resulted >1 log unit of viral titer reduction in the lung of infected mice at the dose level as low as 12.5 mg/kg. 
Reduced viral titer to 1.9 log units compared to vehicle at 50 mg/kg dose.
Clinical Trial
Molecular Weight

439.53

Formula

C22H25N5O3S
CAS No.
Appearance

Solid

Color

White to off-white

SMILES

NC1(COC1)CNC2=NC(N(CC3)CC4=CC=CC=C4S3(=O)=O)=NC5=C2C=C(C)C=C5
Shipping

Room temperature in continental US; may vary elsewhere.
Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 2 years
-20°C 1 year
Solvent & Solubility
In Vitro: 

DMSO : 125 mg/mL (284.39 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.2752 mL 11.3758 mL 22.7516 mL
5 mM 0.4550 mL 2.2752 mL 4.5503 mL
View the 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, 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.

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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 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.

  • Protocol 1

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

    Solubility: ≥ 2.08 mg/mL (4.73 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 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: ≥ 2.08 mg/mL (4.73 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 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.
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.
Purity & Documentation
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, 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
DMSO 1 mM 2.2752 mL 11.3758 mL 22.7516 mL 56.8789 mL
5 mM 0.4550 mL 2.2752 mL 4.5503 mL 11.3758 mL
10 mM 0.2275 mL 1.1376 mL 2.2752 mL 5.6879 mL
15 mM 0.1517 mL 0.7584 mL 1.5168 mL 3.7919 mL
20 mM 0.1138 mL 0.5688 mL 1.1376 mL 2.8439 mL
25 mM 0.0910 mL 0.4550 mL 0.9101 mL 2.2752 mL
30 mM 0.0758 mL 0.3792 mL 0.7584 mL 1.8960 mL
40 mM 0.0569 mL 0.2844 mL 0.5688 mL 1.4220 mL
50 mM 0.0455 mL 0.2275 mL 0.4550 mL 1.1376 mL
60 mM 0.0379 mL 0.1896 mL 0.3792 mL 0.9480 mL
80 mM 0.0284 mL 0.1422 mL 0.2844 mL 0.7110 mL
100 mM 0.0228 mL 0.1138 mL 0.2275 mL 0.5688 mL
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Ziresovir Related Classifications

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:

Ziresovir1422500-60-4AK0529 RO-0529AK 0529AK-0529RO0529RO 0529RO-0529RSVRespiratory syncytial virusorally bioavailableMutant Strains RSVD486ND489Asyncytia formationprotein-induced cell–cell fusionInhibitorinhibitorinhibit

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