Cepharadione B

Cepharadione B
Product Name Cepharadione B
CAS No.: 55610-02-1
Catalog No.: CFN94151
Molecular Formula: C19H15NO4
Molecular Weight: 321.33 g/mol
Purity: >=98%
Type of Compound: Alkaloids
Physical Desc.: Powder
Targets: Tyrosinase
Source: The roots of Stephania cepharantha Hayata
Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Price:
Cepharadione B exhibits strong tyrosinase inhibitory activity with an IC50 value of 170 microM. It also exhibits significant cytotoxicity against five human tumor cell lines (A-549, SK-OV-3, SK-MEL-2, XF-498 and HCT-15) in vitro.
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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

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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    Chem. Pharm. Bull. (Tokyo)., 2009 ,57(11):1227-30.
    The constituents and their bioactivities of Houttuynia cordata.[Pubmed: 19881272]

    METHODS AND RESULTS:
    Chemical investigation on the whole plant of Houttuynia cordata has resulted in the isolation of two new compounds, named as houttuynoside A (1) and houttuynamide A (2), together with thirty-eight known compounds. The structures of 1 and 2 were elucidated on the basis of spectroscopic analysis. In the inhibitory effects on herpes simplex virus type 1 (HSV-1) assay, norCepharadione B (10) showed good inhibitory activity against the replication of HSV-1. In addition, the antioxidant and antityrosinase activities of some isolated compounds were also evaluated.
    CONCLUSIONS:
    Among these compounds, quercitrin (25) and quercetin-3-O-beta-D-galactopyranoside (26) showed excellent 2,2-diphenyl-1-picrylhydrazyl radical-scavenging property with IC50 values of 31 and 63 microM, respectively. Cepharadione B (9) exhibited strong tyrosinase inhibitory activity with an IC50 value of 170 microM.
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    METHODS AND RESULTS:
    Six bioactive alkaloids, aristolactam B(1), piperolactam A(2), aristolactam A(3), norCepharadione B(4), Cepharadione B(5) and splendidine(6) were isolated by bioactivity-guided fractionation of a methanolic extract of the aerial part of Houttuynia cordata.
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    Several of them exhibited significant cytotoxicity against five human tumor cell lines (A-549, SK-OV-3, SK-MEL-2, XF-498 and HCT-15) in vitro.
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