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    Shikonine
    Shikonine
    Information
    CAS No. 517-89-5 Price $100 / 20mg
    Catalog No.CFN92622Purity>=98%
    Molecular Weight288.3Type of CompoundQuinones
    FormulaC16H16O5Physical DescriptionPowder
    Download Manual    COA    MSDS    SDFSimilar structuralComparison (Web)
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    Shikonine Description
    Source: The roots of Lithosperraum erythrorhizon Sieb. et Zucc.
    Biological Activity or Inhibitors: 1. Shikonin and alkannin are the most potent and specific inhibitors to tumor-specific pyruvate kinase-M2 (PKM2) reported so far, as PKM2 universally expresses in cancer cells and dictates the last rate-limiting step of glycolysis vital for cancer cell proliferation and survival, enantiomeric shikonin and alkannin may have potential in future clinical application.
    2. Shikonin, a naphthoquinone pigment from the root of Lithospermum erythrorhizon, it has antibacterial, antitumor, and anti-inflammatory effects, it provides neuroprotection by reducing the release of various proinflammatory molecules from activated microglia.
    3. Shikonin can inhibit VEGF-induced angiogenesis and suppress tumor growth in lewis lung carcinoma-bearing mice.
    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 3.4686 mL 17.343 mL 34.6861 mL 69.3722 mL 86.7152 mL
    5 mM 0.6937 mL 3.4686 mL 6.9372 mL 13.8744 mL 17.343 mL
    10 mM 0.3469 mL 1.7343 mL 3.4686 mL 6.9372 mL 8.6715 mL
    50 mM 0.0694 mL 0.3469 mL 0.6937 mL 1.3874 mL 1.7343 mL
    100 mM 0.0347 mL 0.1734 mL 0.3469 mL 0.6937 mL 0.8672 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.
    Shikonine References Information
    Citation [1]

    Oncogene, 2011, 30(42):4297-306.

    Shikonin and its analogs inhibit cancer cell glycolysis by targeting tumor pyruvate kinase-M2.[Pubmed: 21516121]
    We recently reported that shikonin and its analogs were a class of necroptotic inducers that could bypass cancer drug resistance. However, the molecular targets of shikonin are not known. Here, we showed that shikonin and its analogs are inhibitors of tumor-specific pyruvate kinase-M2 (PKM2), among which shikonin and its enantiomeric isomer alkannin were the most potent and showed promising selectivity, that is, shikonin and alkannin at concentrations that resulted in over 50% inhibition of PKM2 activity did not inhibit PKM1 and pyruvate kinase-L (PKL). Shikonin and alkannin significantly inhibited the glycolytic rate, as manifested by cellular lactate production and glucose consumption in drug-sensitive and resistant cancer cell lines (MCF-7, MCF-7/Adr, MCF-7/Bcl-2, MCF-7/Bcl-x(L) and A549) that primarily express PKM2.