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    Oroxin A
    Information
    CAS No. 57396-78-8 Price $178 / 20mg
    Catalog No.CFN99712Purity>=98%
    Molecular Weight432.38Type of CompoundFlavonoids
    FormulaC21H20O10Physical DescriptionYellow powder
    Download Manual    COA    MSDS    SDFSimilar structuralComparison (Web)
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    Oroxin A Description
    Source: The roots of Scutellaria baicalensis.
    Biological Activity or Inhibitors: 1. Oroxin A has antioxidant activity.
    Solvent: 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.
    Calculate Dilution Ratios(Only for Reference)
    1 mg 5 mg 10 mg 20 mg 25 mg
    1 mM 2.3128 mL 11.5639 mL 23.1278 mL 46.2556 mL 57.8195 mL
    5 mM 0.4626 mL 2.3128 mL 4.6256 mL 9.2511 mL 11.5639 mL
    10 mM 0.2313 mL 1.1564 mL 2.3128 mL 4.6256 mL 5.782 mL
    50 mM 0.0463 mL 0.2313 mL 0.4626 mL 0.9251 mL 1.1564 mL
    100 mM 0.0231 mL 0.1156 mL 0.2313 mL 0.4626 mL 0.5782 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.
    Oroxin A References Information
    Citation [1]

    RSC Adv. 2014 Jan 1;4(85):45151-45154.

    Development of a Concise Synthetic Approach to Access Oroxin A.[Pubmed: 25431654 ]
    A novel environment-friendly method to access bioactive Oroxin A through a one-pot/two-step process from naturally abundant and inexpensive baicalin is described. The procedure presented here has several advantages including clean, one-pot, synthetic ease, and large-scale feasibility. This work also provides a model strategy for rapid and diverse access to natural molecules sharing the common skeleton of this family.
    Citation [2]

    Yao Xue Xue Bao. 2006 Apr;41(4):380-4.

    [Qualitative and quantitative determination of the main components of huanglianjiedu decoction by HPLC-UV/MS].[Pubmed: 16856488]
    AIM: To establish a comprehensive HPLC analytical method of Huanglianjiedu decoction. METHODS: This study was performed by HPLC-UV/MS to identify the chemical constituents of the whole and individual herbs of the "Huanglianjiedu decoction". Zorbax Extend C18 (150 mm x 4. 6 mm ID, 5 microm) column was used; the mobile phase was composed of acetonitrile (A) and water (B, with 0.5% acetic acid) with gradient elution; the flow rate was 1.0 mL x min(-1) and the column temperature was setup at 25 degrees C. The detection wavelength was 254 nm. RESULTS: The chromatogram of Huanglianjiedu decoction showed 21 main peaks. Peaks 1, 2, 5 and 18 were from Gardenia jasminoides Ellis, Peaks 8, 13, 14, 15, 16, 17, 19 and 21 from Scutellaria baicalensis Georgi. While 10 from Coptis chinensis Franch and 20 from Phellodendron amurense Rupr., Peaks 3, 4, 6, 9, 11 and 12 came from them together. Peak 7 presented in the chromatograms of the herbs except Gardenia jasminoides Ellis. By comparison of the retention time, the on-line UV spectra and MS spectra, 11 peaks were identified as 5 (geniposide), 9 (jatrorrhizine), 10 (coptisine), 11 (palmatine), 12 (berberine), 13 (baicalin), 15 (Oroxin A), 17 (wogonoside), 19 (baicalein), 20 (obaculactone), 21 (wogonin), then eight of them were quantified by HPLC-UV. CONCLUSION: The method could represent the characteristics of Huanglianjiedu decoction, and it could be used to evaluate the quality and quantity of Huanglianjiedu decoction. It distinguished between Coptis chinensis Franch and Phellodendron amurense Rupr. by HPLC for the first time.