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    Przewaquinone A
    Information
    CAS No. 76843-23-7 Price $418 / 5mg
    Catalog No.CFN92022Purity> 95%
    Molecular Weight310.4Type of CompoundDiterpenoids
    FormulaC19H18O4Physical DescriptionRed powder
    Download Manual    COA    MSDS    SDFSimilar structuralComparison (Web)
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    Przewaquinone A Description
    Source: The roots of Salvia miltiorrhiza
    Biological Activity or Inhibitors: 1. Przewaquinone A has antitumor activity.
    Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, 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 3.2216 mL 16.1082 mL 32.2165 mL 64.433 mL 80.5412 mL
    5 mM 0.6443 mL 3.2216 mL 6.4433 mL 12.8866 mL 16.1082 mL
    10 mM 0.3222 mL 1.6108 mL 3.2216 mL 6.4433 mL 8.0541 mL
    50 mM 0.0644 mL 0.3222 mL 0.6443 mL 1.2887 mL 1.6108 mL
    100 mM 0.0322 mL 0.1611 mL 0.3222 mL 0.6443 mL 0.8054 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.
    Przewaquinone A References Information
    Citation [1]

    Chemosphere. 2013 Oct;93(6):997-1004.

    Algicidal activity of Salvia miltiorrhiza Bung on Microcystis aeruginosa--towards identification of algicidal substance and determination of inhibition mechanism.[Pubmed: 23810520]
    The present study was to isolate and identify a potent algicidal compound from extract of Salvia miltiorrhiza and study the potential inhibition mechanism on Microcystis aeruginosa. Column chromatography and bioassay-guided fractionation methods were carried out to yield neo-Przewaquinone A, which was identified by spectral analysis. The EC50 of neo-Przewaquinone A on M. aeruginosa were 4.68 mg L(-1). In addition, neo-Przewaquinone A showed relatively higher security on Chlorella pyrenoidosa and Scenedesmus obliquus, with the EC50 values of 14.78 and 10.37 mg L(-1), respectively. For the potential inhibition mechanisms, neo-Przewaquinone A caused M. aeruginosa cells morphologic damage or lysis, increased malondialdehyde content and decreased the soluble protein content, total antioxidant and superoxide dismutase activity, and significantly inhibited three photosynthesis-related genes (psaB, psbD, and rbcL). The results demonstrated the algicidal effect of neo-Przewaquinone A on M. aeruginosa and provided the possible inhibition mechanisms.