(-)-Epigallocatechin-3-(3''-O-methyl) gallate
Based on 1 Customer Validation
(-)-Epigallocatechin-3-(3''-O-methyl) gallate ((-)-EGCG-3''-O-ME) is a natural product that can be isolated from the tea leaf, with strong antioxidative activity. (-)-Epigallocatechin-3-(3''-O-methyl) gallate has a strong cytotoxic activity for rat cancer cells.
For research use only. We do not sell to patients.
- Purity: 99.83%
- CAS No.: 83104-87-4
- Formula: C23H20O11
- Molecular Weight:472.40
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Storage:
4°C, protect from light
* In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)
To place orders, for customer services and technical support, please contact: MedChemExpress USA
Tel: 609-228-6898 E-mail: [email protected] [email protected]
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Biological Activity
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Chemical Information
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Solvent & Solubility
- Purity & Documentation
- References
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Help & FAQs
Biological Activity
Description
In Vitro
(-)-Epigallocatechin-3-(3''-O-methyl) gallate scavenges DPPH-derived radicals (IC50: 36.54 μM), and scavenges ABTS radicals (IC50: 2.59 μM)[2].
(-)-Epigallocatechin-3-(3''-O-methyl) gallate (12.5 μM, 30 min) scavenges intracellular ROS production in RAW264.7 cells[2].
(-)-Epigallocatechin-3-(3''-O-methyl) gallate (6.25 and 12 μM, 24-72 h) promotes cell proliferation in HaCaT cells[2].
(-)-Epigallocatechin-3-(3''-O-methyl) gallate (6.25 and 12 μM, 12 h) increased HO-1 expression in HaCaT cells treated with 250 μM H2O2[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Cell Line:HaCaT cells treated with 250 μM H2O2
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Concentration:6.25 and 12 μM
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Incubation Time:24 h
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Result:Increased HO-1 expression, indicating the cytoprotective role against H2O2.
Chemical Information
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CAS No. 83104-87-4
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Appearance Solid
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Molecular Weight 472.40
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Formula C23H20O11
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Color Off-white to pink
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SMILES
O=C(O[C@H]1[C@@H](C2=CC(O)=C(O)C(O)=C2)OC3=CC(O)=CC(O)=C3C1)C4=CC(OC)=C(O)C(O)=C4
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Synonyms
(-)-EGCG-3''-O-ME
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Structure Classification
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Initial Source
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
4°C, protect from light
* In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)
Solvent & Solubility
In Vitro:
DMSO : 50 mg/mL (105.84 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
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 (protect from light). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
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 (protect from light). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
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.
Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline
Solubility: ≥ 1.25 mg/mL (2.65 mM); Clear solution
This protocol yields a clear solution of ≥ 1.25 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (12.5 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: ≥ 1.25 mg/mL (2.65 mM); Clear solution
This protocol yields a clear solution of ≥ 1.25 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (12.5 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:
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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. * In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)
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.
Purity & Documentation
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Data Sheet (279 KB)
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SDS (252 KB)
- English - EN (252 KB)
- Français - FR (252 KB)
- Deutsch - DE (252 KB)
- Norwegian - NO (252 KB)
- Español - ES (252 KB)
- Swedish - SV (252 KB)
- Italian - IT (252 KB)
- Korean - KR (252 KB)
- Portuguese - PT (252 KB)
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Handling Instructions (2659 KB)
References
[1]. Kawase M, et al. Antioxidative activity of (-)-epigallocatechin-3-(3''-O-methyl)gallate isolated from fresh tea leaf and preliminary results on its biological activity. Biosci Biotechnol Biochem. 2000 Oct;64(10):2218-20. [Content Brief]
[2]. Kim E, et al. Antioxidant and Cytoprotective Effects of (-)-Epigallocatechin-3-(3″-O-methyl) Gallate. Int J Mol Sci. 2019 Aug 16;20(16):3993. [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 (protect from light). 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 |
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| DMSO | 1 mM | 2.1169 mL | 10.5843 mL | 21.1685 mL | 52.9213 mL |
| 5 mM | 0.4234 mL | 2.1169 mL | 4.2337 mL | 10.5843 mL | |
| 10 mM | 0.2117 mL | 1.0584 mL | 2.1169 mL | 5.2921 mL | |
| 15 mM | 0.1411 mL | 0.7056 mL | 1.4112 mL | 3.5281 mL | |
| 20 mM | 0.1058 mL | 0.5292 mL | 1.0584 mL | 2.6461 mL | |
| 25 mM | 0.0847 mL | 0.4234 mL | 0.8467 mL | 2.1169 mL | |
| 30 mM | 0.0706 mL | 0.3528 mL | 0.7056 mL | 1.7640 mL | |
| 40 mM | 0.0529 mL | 0.2646 mL | 0.5292 mL | 1.3230 mL | |
| 50 mM | 0.0423 mL | 0.2117 mL | 0.4234 mL | 1.0584 mL | |
| 60 mM | 0.0353 mL | 0.1764 mL | 0.3528 mL | 0.8820 mL | |
| 80 mM | 0.0265 mL | 0.1323 mL | 0.2646 mL | 0.6615 mL | |
| 100 mM | 0.0212 mL | 0.1058 mL | 0.2117 mL | 0.5292 mL |
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