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    (-)-Epicatechin-3-(3''-O-methyl) gallate
    (-)-Epicatechin-3-(3''-O-methyl) gallate
    Information
    CAS No. 83104-86-3 Price
    Catalog No.CFN92080Purity> 95%
    Molecular Weight456.4Type of CompoundFlavonoids
    FormulaC23H20O10Physical DescriptionPowder
    Download     COA    MSDS    SDFSimilar structuralComparison (Web)
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    (-)-Epicatechin-3-(3''-O-methyl) gallate Description
    Source: The wood of Acacia catechu (L.F.) Willd.
    Biological Activity or Inhibitors:
    Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
    Storage: Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months(2-8C).

    Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.

    Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com

    After receiving: The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
    Calculate Dilution Ratios(Only for Reference)
    1 mg 5 mg 10 mg 20 mg 25 mg
    1 mM 2.1911 mL 10.9553 mL 21.9106 mL 43.8212 mL 54.7765 mL
    5 mM 0.4382 mL 2.1911 mL 4.3821 mL 8.7642 mL 10.9553 mL
    10 mM 0.2191 mL 1.0955 mL 2.1911 mL 4.3821 mL 5.4777 mL
    50 mM 0.0438 mL 0.2191 mL 0.4382 mL 0.8764 mL 1.0955 mL
    100 mM 0.0219 mL 0.1096 mL 0.2191 mL 0.4382 mL 0.5478 mL
    * Note: If you are in the process of experiment, it's need to make the dilution ratios of the samples. The dilution data of the sheet for your reference. Normally, it's can get a better solubility within lower of Concentrations.
    (-)-Epicatechin-3-(3''-O-methyl) gallate References Information
    Citation [1]

    Nippon Shokuhin Kogyo Gakkaishi》 , 1999 , 46 (3) :138-147.

    HPLC Analysis of Catechins in Various Kinds of Green Teas Produced in Japan and Abroad[Reference: WebLink]
    In Japanese green teas such as Matcha (powdered green tea or ceremony tea), high quality Sencha (Sencha : a ordinary Japanese green tea), medium Sencha, Bancha (coarse type green tea) and Hojicha (roasted green tea), the sum of four major catechins, i.e. (-)-epigallocatechin-3-gallate, (-)-epicatechin-3-gallate, (-)-epigallocatechin and (-)-epicatechin were dominant in the total catechin contents. In addition, those teas contained the heat-converted catechins, i.e. (-)-gallocatechin-3-gallate, (-)-catechin-3-gallate, (-)-gallocatechin and (-)-catechin in a small amount. A somewhat large amounts of the heat-converted catechins were observed to appear in Hojicha. Chinese green teas such as Lung Ching tea, Yunnan tea and gun powder, Vietnamese green tea and Indian green teas such as Darjeeling green tea and Darjeeling silver tip contained much more total catechin contents and in those (-)-epigallocatechin-3-gallate showed a especially higher content in comparison with the Japanese ones. (-)-Epigallocatechin-3-(3′-O-methyl) gallate, (-)-Epicatechin-3-(3''-O-methyl) gallate, (-)-epigallocatechin-3,5-digallate and (-)-epicatechin-3,5-digallate were found in Chinese, Vietnamese and Indian green teas. The two catechin-(O-methyl) gallates and the two catechin-digallates were presumably characteristic constituents of China variety (Camellia sinensis var. sinensis) and Assam variety (Camellia sinensis var. assamica), respectively.