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    Alnustone
    Alnustone
    Information
    CAS No. 33457-62-4 Price $118 / 20mg
    Catalog No.CFN90620Purity>=98%
    Molecular Weight262.35Type of CompoundPhenols
    FormulaC19H18OPhysical DescriptionPowder
    Download     COA    MSDSSimilar structuralComparison (Web)
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    Biological Activity
    Description: Alnustone has anti-inflammatory, antihepatotoxic and antiemetic activities,
    Targets: Immunology & Inflammation related
    In vivo:
    Planta Med. 1993 Oct;59(5):451-4.
    Three non-phenolic diarylheptanoids with anti-inflammatory activity from Curcuma xanthorrhiza.[Pubmed: 8255938]

    METHODS AND RESULTS:
    Bioassay-guided fractionation of a hexane extract of the rhizomes of Curcuma xanthorrhiza Roxb. (Zingiberaceae) led to the isolation of three non-phenolic diarylheptanoids, identified mainly by high-field 1H-NMR as trans-trans-1,7-diphenyl-1,3-heptadien-4-one (Alnustone), trans-1,7-diphenyl-1-hepten-5-ol, and trans,trans-1,7-diphenyl-1,3-heptadien-5-ol. The latter is reported for the first time as a plant constituent. Germacrone, curzerenone, and cinnamaldehyde were also isolated and identified.
    CONCLUSIONS:
    The three diarylheptanoids all exerted significant anti-inflammatory activity in the assay of carrageenin-induced hind paw edema in rats.
    Alnustone Description
    Source: The seeds of Alpinia katsumadai Hayata.
    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.
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    Recently, ChemFaces products have been cited in many studies from excellent and top scientific journals

    Cell. 2018 Jan 11;172(1-2):249-261.e12.
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    PMID: 29328914

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    Calculate Dilution Ratios(Only for Reference)
    1 mg 5 mg 10 mg 20 mg 25 mg
    1 mM 3.8117 mL 19.0585 mL 38.117 mL 76.234 mL 95.2925 mL
    5 mM 0.7623 mL 3.8117 mL 7.6234 mL 15.2468 mL 19.0585 mL
    10 mM 0.3812 mL 1.9059 mL 3.8117 mL 7.6234 mL 9.5293 mL
    50 mM 0.0762 mL 0.3812 mL 0.7623 mL 1.5247 mL 1.9059 mL
    100 mM 0.0381 mL 0.1906 mL 0.3812 mL 0.7623 mL 0.9529 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.
    Protocol
    Structure Identification:
    Zhongguo Zhong Yao Za Zhi. 2010 Aug;35(16):2091-4.
    Qualitative and quantitative methods for Alpiniae Katsumadai semen[Pubmed: 21046736]
    The qualitative and quantitative methods for the quality evaluation of Alpiniae Katsumadai Semen were established. Alpinetin, pinocembrin, cardamonin and Alnustone in the sample were identified by TLC.
    METHODS AND RESULTS:
    The contents of them were determined by HPLC. The separation was performed on a Ultimate XB-C18 column (4.6 mm x 250 mm, 5 microm) at 30 degrees C using a gradient elution consisting of mobile phase A (water) and mobile phase B (MeOH). The detection wavelength was 300 nm. The TLC method was suitable for the identification of alpinetin, pinocembrin, cardamonin and Alnustone. The linear ranges of the four reference compounds were 25.5-509 (r = 0.9999), 24.9-498 (r = 0.9999), 26.1-521 (r = 0.9999), 50.2-1003 ng (r = 0.9999), respectively. The average recoveries (n=9) of the four components were 97.95%, 97.36%, 97.50%, 98.02%, RSD < 1.9%. Nine samples were analyzed by the established methods.
    CONCLUSIONS:
    The results indicate that, the methods are simple, accurate, sensitive and reliable for quality evaluation of Alpiniae Katsumadai Semen.