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(-)-Epiafzelechin 3-O-gallate

CAS# 108907-43-3

(-)-Epiafzelechin 3-O-gallate

Catalog No. BCN8740----Order now to get a substantial discount!

Product Name & Size Price Stock
(-)-Epiafzelechin 3-O-gallate: 5mg $460 In Stock
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Quality Control of (-)-Epiafzelechin 3-O-gallate

Quality Control & MSDS

Number of papers citing our products

Chemical structure

(-)-Epiafzelechin 3-O-gallate

3D structure

Chemical Properties of (-)-Epiafzelechin 3-O-gallate

Cas No. 108907-43-3 SDF Download SDF
PubChem ID 467295 Appearance Powder
Formula C22H18O9 M.Wt 426.4
Type of Compound Flavonoids Storage Desiccate at -20°C
Solubility Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc.
Chemical Name [(2~{R},3~{R})-5,7-dihydroxy-2-(4-hydroxyphenyl)-3,4-dihydro-2~{H}-chromen-3-yl] 3,4,5-trihydroxybenzoate
SMILES C1C(C(OC2=CC(=CC(=C21)O)O)C3=CC=C(C=C3)O)OC(=O)C4=CC(=C(C(=C4)O)O)O
Standard InChIKey SDZPYNMXGUHFMZ-TZIWHRDSSA-N
Standard InChI InChI=1S/C22H18O9/c23-12-3-1-10(2-4-12)21-19(9-14-15(25)7-13(24)8-18(14)30-21)31-22(29)11-5-16(26)20(28)17(27)6-11/h1-8,19,21,23-28H,9H2/t19-,21-/m1/s1
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Source of (-)-Epiafzelechin 3-O-gallate

The leaves of Green Tea

Biological Activity of (-)-Epiafzelechin 3-O-gallate

Description(-)-Epiafzelechin 3-O-gallate has antioxidant activity.
In vitro

Antioxidant phenolic compounds from Pu-erh tea.[Pubmed: 23187287 ]

Molecules. 2012 Nov 27;17(12):14037-45.


METHODS AND RESULTS:
Eight compounds were isolated from the water extract of Pu-erh tea and their structures were elucidated by NMR and MS as gallic acid (1), (+)-catechin (2), (−)-epicatechin (3), (−)-epicatechin-3-O-gallate (4), (−)-epigallocatechin-3-O-gallate (5), (-)-Epiafzelechin 3-O-gallate (6), kaempferol (7), and quercetin (8). Their in vitro antioxidant activities were assessed by the DPPH and ABTS scavenging methods with microplate assays. The relative order of DPPH scavenging capacity for these compounds was compound 8 > compound 7 > compound 1 > compound 6 > compound 4 ≈ compound 5 > compound 2 > VC (reference) > compound 3, and that of ABTS scavenging capacity was compound 1 > compound 2 > compound 7 ≈ compound 8 > compound 6 > compound 5 > compound 4 > VC (reference) > compound 3.
CONCLUSIONS:
The results showed that these phenolic compounds contributed to the antioxidant activity of Pu-erh tea.

Protocol of (-)-Epiafzelechin 3-O-gallate

Structure Identification
Zhongguo Zhong Yao Za Zhi. 2013 May;38(9):1386-9.

Chemical constituents of Camellia sinensis var. assamica.[Pubmed: 23944074]

To study the chemical constituents of Camellia sinensis var. assamica.
METHODS AND RESULTS:
The compounds were isolated by NKA Macroporous resin silica gel, Sephadex LH-20, RP-C18 column chromatographies and semi-preparative HPLC,and their structures were elucidated by physicochemical properties and spectral analysis. Thirteen compounds were isolated and identified as caffeine (1), theobromine (2), gallic acid (3), (+)-catechin (4), ampelopsin (5), (-)-epicatechin (6), (-)-epiafzelechin (7), (-)-epicatechin-3-O-gallate (8), (-)-Epiafzelechin 3-O-gallate(9) , (+)-catechin-3-O-gallate (10) , (+)-afzelechin-3-O-gallate (11), quemefin-3-O-alpha-L-arabinopyranosid (12), and (-)-epicatechin-3-O-p-hydroxybenzoate (13).
CONCLUSIONS:
Compounds 2, 5, 10-13 were isolated from this plant for the first time, and compound 11 is a new natural product.

(-)-Epiafzelechin 3-O-gallate Dilution Calculator

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(-)-Epiafzelechin 3-O-gallate Molarity Calculator

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Preparing Stock Solutions of (-)-Epiafzelechin 3-O-gallate

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 2.3452 mL 11.7261 mL 23.4522 mL 46.9043 mL 58.6304 mL
5 mM 0.469 mL 2.3452 mL 4.6904 mL 9.3809 mL 11.7261 mL
10 mM 0.2345 mL 1.1726 mL 2.3452 mL 4.6904 mL 5.863 mL
50 mM 0.0469 mL 0.2345 mL 0.469 mL 0.9381 mL 1.1726 mL
100 mM 0.0235 mL 0.1173 mL 0.2345 mL 0.469 mL 0.5863 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

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