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    Guajadial B
    Guajadial B
    CAS No. 1414455-03-0 Price
    Catalog No.CFN96065Purity>=98%
    Molecular Weight474.6Type of CompoundSesquiterpenoids
    FormulaC30H34O5Physical DescriptionPowder
    Download     COA    MSDSSimilar structuralComparison (Web)
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    Our products had been exported to the following research institutions and universities, And still growing.
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    Biological Activity
    Description: 1. Guajadial B shows cytotoxicities against five human cancer cell lines, it is the most effective having an IC50 value of 150 nM toward A549 cells.
    2. Guajadial B acts as a Top1 catalytic inhibitor and delays Top1 poison-mediated DNA damage.
    Targets: Topoisomerase
    Guajadial B Description
    Source: The herbs of Psidium guajava
    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.
    doi: 10.1016/j.cell.2017.12.019.

    PMID: 29328914

    Mol Cell. 2017 Nov 16;68(4):673-685.e6.
    doi: 10.1016/j.molcel.2017.10.022.

    PMID: 29149595

    Scientific Reports 2017 Dec 11;7(1):17332.
    doi: 10.1038/s41598-017-17427-6.

    PMID: 29230013

    Molecules. 2017 Oct 27;22(11). pii: E1829.
    doi: 10.3390/molecules22111829.

    PMID: 29077044

    J Cell Biochem. 2018 Feb;119(2):2231-2239.
    doi: 10.1002/jcb.26385.

    PMID: 28857247

    Phytomedicine. 2018 Feb 1;40:37-47.
    doi: 10.1016/j.phymed.2017.12.030.

    PMID: 29496173
    Calculate Dilution Ratios(Only for Reference)
    1 mg 5 mg 10 mg 20 mg 25 mg
    1 mM 2.107 mL 10.5352 mL 21.0704 mL 42.1408 mL 52.6759 mL
    5 mM 0.4214 mL 2.107 mL 4.2141 mL 8.4282 mL 10.5352 mL
    10 mM 0.2107 mL 1.0535 mL 2.107 mL 4.2141 mL 5.2676 mL
    50 mM 0.0421 mL 0.2107 mL 0.4214 mL 0.8428 mL 1.0535 mL
    100 mM 0.0211 mL 0.1054 mL 0.2107 mL 0.4214 mL 0.5268 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.
    Guajadial B References Information
    Citation [1]

    Org Lett. 2012 Dec 7;14(23):5936-9.

    Isolation and biomimetic synthesis of (±)-guajadial B, a novel meroterpenoid from Psidium guajava.[Pubmed: 23163238]
    (±)-Guajadial B (1), an unusual humulene-based meroterpenoid, was isolated as a racemate from the leaves of Psidium guajava, collected from Vietnam. The structure of this novel secondary metabolite was established on the basis of extensive analysis of NMR spectra and confirmed by biomimetic synthesis in a domino three-component coupling reaction.
    Citation [2]

    J Agric Food Chem. 2017 Jun 21;65(24):4993-4999.

    Meroterpenoids with Antitumor Activities from Guava (Psidium guajava).[Pubmed: 28578580]
    Psidium guajava L., a species native to South America, has been widely cultivated in the tropical and subtropical areas of China for its popular fruits. The preliminary analysis by liquid chromatography-ultraviolet (LC-UV) indicated the presence of meroterpenoids in the fruits of P. guajava (guava). Subsequent fractionation of the petroleum ether extract resulted in the identification of two new meroterpenoids, psiguajavadials A (1) and B (2), together with 14 previously described meroterpenoids (3-16). Their structures were fully elucidated by comprehensive spectroscopic techniques and theoretical calculations. All of the meroterpenoids showed cytotoxicities against five human cancer cell lines, with Guajadial B (12) being the most effective having an IC50 value of 150 nM toward A549 cells. Furthermore, biochemical topoisomerase I (Top1) assay revealed that psiguajavadial A (1), psiguajavadial B (2), Guajadial B (12), guajadial C (14), and guajadial F (16) acted as Top1 catalytic inhibitors and delayed Top1 poison-mediated DNA damage. The flow cytometric analysis indicated that the new meroterpenoids psiguajavadials A (1) and B (2) could induce apoptosis of HCT116 cells. These data suggest that meroterpenoids from guava fruit could be used for the development of antitumor agents