Dehydroascorbic acid
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Dehydroascorbic acid is an oxidized form of vitamin C that can cross the blood-brain barrier (BBB). Dehydroascorbic acid clears cytotoxic reactive oxygen species (ROS) produced after ischemic stroke by converting to ascorbic acid (AA), thereby reducing neuronal and glial cell damage and stabilizing cerebral microvascular NO signaling to maintain perfusion in the ischemic area. Dehydroascorbic acid can be used in research on ischemic stroke.
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- Pureté: 99.94%
- CAS No.: 490-83-5
- Formule: C6H6O6
- Masse moléculaire:174.11
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Stockage:Powder -20°C, 3 years ; In solvent -80°C, 6 months , -20°C, 1 month
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Activité biologique
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Human Endogenous Metabolite |
Neuronal injury in ischemic stroke is partly mediated by cytotoxic reactive oxygen species. Although the antioxidant ascorbic acid (AA) or vitamin C does not penetrate the blood-brain barrier (BBB), its oxidized form, dehydroascorbic acid (DHA), enters the brain by means of facilitative transport[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Dehydroascorbic acid (250, 500 mg/kg, intravenous injection, single dose) dose-dependently reduces infarct volume, improves neurological function, increases cerebral blood flow at 24 hours, and decreases mortality in C57BL6J mice with permanent focal cerebral ischemia (administered 3 hours after ischemia)[2].
In C57BL6J mouse models of cerebral ischemia, dehydroascorbic acid (intravenous injection, single dose) can penetrate the blood-brain barrier and be converted into ascorbic acid (AA) in the brain, exerting neuroprotective effects through its antioxidant action. Direct administration of AA, however, does not penetrate the blood-brain barrier and has no neuroprotective effect[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Chemical Information
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CAS No. 490-83-5
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Appearance Solid
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Masse moléculaire 174.11
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Formule C6H6O6
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Color Off-white to yellow
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SMILES
OC[C@H](O)[C@]([H])(C(C1=O)=O)OC1=O
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Structure Classification
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Initial Source
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Livraison
Room temperature in continental US; may vary elsewhere.
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Stockage
Powder -20°C 3 years In solvent -80°C 6 months -20°C 1 month
Solvant et solubilité
DMSO : 10 mg/mL (57.43 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
H2O : 5 mg/mL (28.72 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: 1 mg/mL (5.74 mM); Clear solution; Need ultrasonic
This protocol yields a clear solution of 1 mg/mL.
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (10.0 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: ≥ 1 mg/mL (5.74 mM); Clear solution
This protocol yields a clear solution of ≥ 1 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (10.0 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.
Pureté et documentation
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Fiche technique (276 KB)
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SDS (393 KB)
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- Español - ES (393 KB)
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- Italian - IT (393 KB)
- Korean - KR (393 KB)
- Portuguese - PT (393 KB)
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Instruction de manipulation (2659 KB)
Références
[1]. Huang J, et al. Dehydroascorbic acid, a blood-brain barrier transportable form of vitamin C, mediates potentcerebroprotection in experimental stroke. Proc Natl Acad Sci U S A. 2001 Sep 25;98(20):11720-4. [Content Brief]
[2]. Huang J, et al. Dehydroascorbic acid, a blood-brain barrier transportable form of vitamin C, mediates potent cerebroprotection in experimental stroke. Proc Natl Acad Sci U S A. 2001 Sep 25;98(20):11720-4. [Content Brief]
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 | 5.7435 mL | 28.7175 mL | 57.4350 mL | 143.5874 mL |
| 5 mM | 1.1487 mL | 5.7435 mL | 11.4870 mL | 28.7175 mL | |
| 10 mM | 0.5743 mL | 2.8717 mL | 5.7435 mL | 14.3587 mL | |
| 15 mM | 0.3829 mL | 1.9145 mL | 3.8290 mL | 9.5725 mL | |
| 20 mM | 0.2872 mL | 1.4359 mL | 2.8717 mL | 7.1794 mL | |
| 25 mM | 0.2297 mL | 1.1487 mL | 2.2974 mL | 5.7435 mL | |
| DMSO | 30 mM | 0.1914 mL | 0.9572 mL | 1.9145 mL | 4.7862 mL |
| 40 mM | 0.1436 mL | 0.7179 mL | 1.4359 mL | 3.5897 mL | |
| 50 mM | 0.1149 mL | 0.5743 mL | 1.1487 mL | 2.8717 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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