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    Ecdysterone

    • Last Update: 2022-05-29
    • Source: Internet
    • Author: User
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    Ecdysterone

    Ecdysterone

    [Synonyms] β-ecdysone, 20-hydroxyecdysone

    【Structural formula】


    [Molecular formula and molecular weight] C 27 H 44 O 7 ; 480.


    [Source] Cyanotis arachnoidea CBClarke whole plant


    【Properties】White powder


    This product is easily soluble in ethanol, slightly soluble in acetone , slightly soluble in ethyl acetate, chloroform and hot water, and almost insoluble in ether


    Melting point: 234.


    Optical rotation: [α] D 20 +60° (C0.


    【Purity Check】

    TLC

    1.


    Developing solvent ethyl acetate - methanol (65:35:10)

    Check under UV light (254nm), then use vanillin concentrated sulfuric acid to develop color and check under visible light

    2.


    Developing agent chloroform-ethanol (4:1)

    Check under the ultraviolet light (254nm), then use vanillin concentrated sulfuric acid to develop the color, and then check the high performance liquid chromatography under visible light.


    Chromatographic column AichromHypersilC 18 , 5um (4.


    Mobile phase methanol-water (4:1), 1ml/min

    Detection wavelength 243nm, 260nm

    Differential calorimetry

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

    [Structural identification] 238,204


    3462, 1649


    ESI-MS m/z: 481 [M+H] +


    1 H-NMR (C 5 D 5 N) δ: 6.


    13 C-NMR (C 5 D 5 N) δ: 37.


    【Storage】Dry and airtight
    .

     

     

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