1. Immunology/Inflammation Vitamin D Related/Nuclear Receptor Metabolic Enzyme/Protease NF-κB
  2. Glucocorticoid Receptor Mineralocorticoid Receptor NF-κB
  3. Vamorolone

Vamorolone (VBP15) is a first-in-class, orally active dissociative steroidal anti-inflammatory agent and membrane-stabilizer. Vamorolone improves muscular dystrophy without side effects. Vamorolone shows potent NF-κB inhibition and substantially reduces hormonal effects.

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

Vamorolone Chemical Structure

Vamorolone Chemical Structure

CAS No. : 13209-41-1

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Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO
ready for reconstitution
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10 mM * 1 mL in DMSO USD 99 In-stock
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10 mg USD 140 In-stock
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Based on 1 publication(s) in Google Scholar

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  • Biological Activity

  • Purity & Documentation

  • References

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Description

Vamorolone (VBP15) is a first-in-class, orally active dissociative steroidal anti-inflammatory agent and membrane-stabilizer. Vamorolone improves muscular dystrophy without side effects. Vamorolone shows potent NF-κB inhibition and substantially reduces hormonal effects[1][2].

In Vitro

Vamorolone (VBP15)? inhibits TNFα-induced pro-inflammatory NF-κB signaling in C2C12 muscle cells at 1 nM or more. Vamorolone binds the glucocorticoid receptor (GR) and mineralocorticoid receptor (MR) with similar affinity[1].
? Vamorolone (0.1, 1μM; 30 minutes) reduces production of IL1βand CCL5 inflammatory mediators in primary human macrophages[2].
? Vamorolone is a first-in-class mineralocorticoid receptor (MR) antagonist/dissociative glucocorticoid receptor (GR) ligand[3].

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

In Vivo

Vamorolone (5-30 mg/kg; cherry syrup) shows a superior side effect profile compared to pharmacological glucocorticoids in mdx mice[1].
? Vamorolone (30 mg/kg; orally; daily for 20 days) reduces CNS Inflammation in murine experimental autoimmune encephalomyelitis[2].

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

Animal Model: C57BL/6 mice (experimental autoimmune encephalomyelitis)[2]
Dosage: 30 mg/kg
Administration: Orally; daily for 20 days (starting one day prior to MOG 33-55 peptide immunization and continuing)
Result: Reduced CNS inflammation in murine experimental autoimmune encephalomyelitis.
Clinical Trial
Molecular Weight

356.46

Formula

C22H28O4

CAS No.
Appearance

Solid

Color

White to yellow

SMILES

C[C@@]12[C@](C(CO)=O)(O)[C@H](C)C[C@@]1([H])[C@]3([H])CCC4=CC(C=C[C@]4(C)C3=CC2)=O

Shipping

Room temperature in continental US; may vary elsewhere.

Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : 62.5 mg/mL (175.34 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 2.8054 mL 14.0268 mL 28.0536 mL
5 mM 0.5611 mL 2.8054 mL 5.6107 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, 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.

  • Molarity Calculator

  • Dilution Calculator

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

Mass
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Concentration
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Volume
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Molecular Weight *

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

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

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Volume (start)

V1

=
Concentration (final)

C2

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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 (5.84 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 (5.84 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

Purity: 99.10%

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
DMSO 1 mM 2.8054 mL 14.0268 mL 28.0536 mL 70.1341 mL
5 mM 0.5611 mL 2.8054 mL 5.6107 mL 14.0268 mL
10 mM 0.2805 mL 1.4027 mL 2.8054 mL 7.0134 mL
15 mM 0.1870 mL 0.9351 mL 1.8702 mL 4.6756 mL
20 mM 0.1403 mL 0.7013 mL 1.4027 mL 3.5067 mL
25 mM 0.1122 mL 0.5611 mL 1.1221 mL 2.8054 mL
30 mM 0.0935 mL 0.4676 mL 0.9351 mL 2.3378 mL
40 mM 0.0701 mL 0.3507 mL 0.7013 mL 1.7534 mL
50 mM 0.0561 mL 0.2805 mL 0.5611 mL 1.4027 mL
60 mM 0.0468 mL 0.2338 mL 0.4676 mL 1.1689 mL
80 mM 0.0351 mL 0.1753 mL 0.3507 mL 0.8767 mL
100 mM 0.0281 mL 0.1403 mL 0.2805 mL 0.7013 mL
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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.

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Vamorolone
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