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    Home > Chemicals Industry > Chemical Technology > Codonopsis

    Codonopsis

    • Last Update: 2022-05-07
    • Source: Internet
    • Author: User
    Tags

    7 16 inches

    color purity
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    Codonopsis

    Lobetyolin

    【Structural formula】


    [Molecular formula and molecular weight] C 20 H 28 O 8 ; 396.


    [Source] The dried root of Codonopsis pilosula (Franch.


    【Properties】Brown-yellow block crystals


    This product is easily soluble in methanol , ethanol , acetone and ethyl acetate , soluble in ether, acetic acid and chloroform , slightly soluble in benzene and water, and insoluble in carbon disulfide and petroleum ether


    Melting point: 70～72℃


    【Purity Check】

    TLC

    1.


    Developing solvent n-butanol - acetic acid - water (7: 1: 0.


    After checking the color development of 10% sulfuric acid ethanol solution, check under sunlight and ultraviolet light (365nm)

    2.


    Developing agent chloroform-methanol- glacial acetic acid (9:1:0.


    After checking the color development of 10% sulfuric acid ethanol solution, check under sunlight and ultraviolet light (365nm)

    High performance liquid chromatography

    Column Phenomenex Gemini C 18 110A, 5um (4.


    Mobile phase 0-30min, acetonitrile -water (80:20); 30-60min, acetonitrile-water (80:20)→(20:80), 1ml/min

    Detection wavelength 267nm

    【Structural identification】283,268,253,241,215,207


    3385 (-OH), 2924, 2879, 2235 (C=C), 1626 (C=C), 1439, 1078, 1043, 949


    ESI-MS m/z: 831[2M+K] + , 815[2M+Na] + , 435[M+K] + , 419[M+Na] +


    1 H-NMR (CD 3 COCD 3 ) δ: 1.


    13 C-NMR (CD 3 COCD 3 ) δ: 18.


    【Storage】Dry and airtight
    .

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