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    Natural Products
    Ombuoside
    Information
    CAS No. 20188-85-6 Price
    Catalog No.CFN92808Purity>=98%
    Molecular Weight638.6Type of CompoundFlavonoids
    FormulaC29H34O16Physical DescriptionYellow powder
    Download Manual    COA    MSDS    SDFSimilar structuralComparison (Web)  (SDF)
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    According to end customer requirements, ChemFaces provide solvent format. This solvent format of product intended use: Signaling Inhibitors, Biological activities or Pharmacological activities.
    Size /Price /Stock 10 mM * 1 mL in DMSO / Inquiry
    Other Packaging *Packaging according to customer requirements(100uL/well, 200uL/well and more), and Container use Storage Tube With Screw Cap
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    Ombuoside

    Ombuoside
    Product Name Ombuoside
    CAS No.: 20188-85-6
    Catalog No.: CFN92808
    Molecular Formula: C29H34O16
    Molecular Weight: 638.6 g/mol
    Purity: >=98%
    Type of Compound: Flavonoids
    Physical Desc.: Yellow powder
    Targets: Antifection
    Source: The herbs of Scutellaria barbata D. Don
    Solvent: DMSO, Pyridine, Methanol, Ethanol, etc.
    Price:
    Inquire / Order: manager@chemfaces.com
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  • Related Screening Libraries
    Size /Price /Stock 10 mM * 100 uL in DMSO / Inquiry / In-stock
    10 mM * 1 mL in DMSO / Inquiry / In-stock
    Related Libraries
  • Antioxidants Compound Library
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  • Biological Activity
    Description: Ombuoside has antifungal activity. Ombuoside shows significant antioxidant activity in the DPPH, and TEAC, reducing power assays.
    Targets: Antifection
    In vitro:
    Ann Pharm Fr. 1997;55(6):262-8.
    Isolation, identification and antimicrobial activity of ombuoside from Stevia triflora.[Pubmed: 9453171]
    From aerial parts of Stevia triflora DC the flavonol glycoside Ombuoside (7,4'-di-O-methylquercetin-3-O-beta-rutinoside) has been isolated and identified on the basis of spectral data.
    METHODS AND RESULTS:
    Ombuoside and the synthetic derivatives octa-acetylOmbuoside, ombuine and retusine were tested for antimicrobial activity against several strains of Gram-positive and Gram-negative bacteria and the yeast Candida albicans, using the agar diffusion method. The flavonol glycoside Ombuoside and the respective aglycone ombuine, both exhibited moderated activity against Corynebacterium diphtheria, Staphylococcus aureus, Escherichia coli and Candida albicans. To a lesser degree, octaacetylOmbuoside and retusine showed activity against the Gram-positive bacteria C. diphtheria and S. aureus, but proved to be inactive against Gram-negative bacteria and Candida albicans.
    CONCLUSIONS:
    These results indicate that the presence of free hydroxyl groups, either alcoholic or phenolic, is an important chemical feature for the expression of flavonol antimicrobial activity. It is worth noting that this is the first study reported on the antibacterial and antifungal activity of these substances.
    Fitoterapia. 2007 Jan;78(1):32-4.
    Antioxidant compounds from Ebenus pinnata.[Pubmed: 17067757]

    METHODS AND RESULTS:
    Activity-guided fractionation of the methanol extract of Ebenus pinnata aerial parts led to the isolation of Ombuoside (1), kaempferol 3-O-rutinoside (2), rutin (3), catechin (4), and picein (5), along with beta-sitosterol and beta-sitosterol glucoside.
    CONCLUSIONS:
    Compounds 1-4 showed significant antioxidant activity in the DPPH, and TEAC, reducing power assays.
    Ombuoside Description
    Source: The herbs of Scutellaria barbata D. Don
    Solvent: DMSO, Pyridine, Methanol, Ethanol, 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.
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    Calculate Dilution Ratios(Only for Reference)
    1 mg 5 mg 10 mg 20 mg 25 mg
    1 mM 1.5659 mL 7.8296 mL 15.6593 mL 31.3185 mL 39.1481 mL
    5 mM 0.3132 mL 1.5659 mL 3.1319 mL 6.2637 mL 7.8296 mL
    10 mM 0.1566 mL 0.783 mL 1.5659 mL 3.1319 mL 3.9148 mL
    50 mM 0.0313 mL 0.1566 mL 0.3132 mL 0.6264 mL 0.783 mL
    100 mM 0.0157 mL 0.0783 mL 0.1566 mL 0.3132 mL 0.3915 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.
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