5,6,7,8-Tetramethoxycoumarin
Standard reference
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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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Chinese Traditional & Herbal Drugs, 2015 , 46 (10) :1426-30.
Chemical constituents from roots of Ailanthus altissima[Reference:
WebLink]
To study the chemical constituents from the roots of Ailanthus altissima.
METHODS AND RESULTS:
Compounds were isolated and purified by silica gel column chromatography and HPLC, and their structures were identified by spectral analysis. Fourteen compounds were isolated and identified as 20-hydroxydammar-24-en-3-one (1), β-sitosterol (2), ocotillone (3), 5,6,7,8-Tetramethoxycoumarin (4), niloticin (5), isofouquierone peroxide (6), 20S,24S-dihydroxydammar-25-en-3-one (7), piscidinol A (8), eichlerianic acid (9), dihydroniloticin (10), dammar-24-ene-12β,20β-diol-3-one (11), canthin-6-one (12), 12β-hydroxy ocotillone (13), and 20S,25-epoxy-24R-hydroxy-3-dammaranne (14).
CONCLUSIONS:
Compounds 3, 4, 6, 9, 10, and 13 are isolated from this plant for the first time.
