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    Anthocyanin

    • Last Update: 2022-04-08
    • Source: Internet
    • Author: User
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    Anthocyanin

    PraeruptorinB

    【Structural formula】


    [Molecular formula and molecular weight] C 24 H 26 O 7 ; 426.


    [Source] The dried root of Peucedanum praeruptorum Dunn, a plant of the Umbelliferae family


    【Properties】White powder


    This product is easily soluble in methanol and ethyl acetate , but almost insoluble in water


    Melting point: 175~180℃


    Optical rotation: [α] D 25 +14.


    【Purity Check】

    TLC

    1.


    Developing solvent chloroform

    Observe under UV lamp (365nm)

    2.


    Eluent petroleum ether (60 ~ 90 ℃) - ethyl acetate (3:1)

    Observe under UV lamp (365nm)

    High performance liquid chromatography

    Chromatographic column Agilent XDB C 18 , 5um (4.


    The mobile phase methanol - water (75:25), 1ml / min

    Detection wavelength 321nm

    Differential calorimetry

    Start temperature 50℃, end temperature 300℃, heating rate 5℃/min

    [Structural identification] 216(sh), 254, 300, 321


    2980, 1725, 1645, 1600, 1483, 1454, 1374, 1231, 1150, 1048, 899, 846


    EI-MS m/z: 426[M] +


    1 H-NMR (CDCl 3 ) δ: 6.


    13 C-NMR (CDCl 3 ) δ: 159.


    【Storage】Dry and airtight


     

     

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