Qianhucoumarin E

Qianhucoumarin E
Product Name Qianhucoumarin E
CAS No.: 156041-02-0
Catalog No.: CFN92597
Molecular Formula: C19H18O6
Molecular Weight: 342.4 g/mol
Purity: >=98%
Type of Compound: Coumarins
Physical Desc.: Cryst.
Source: The herbs of Peucedanum harry-smithii var. subglabrum
Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Price: $318/5mg
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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    Simultaneous determination of three coumarin constituents in roots of Peucedanum praeruptorum by RP-HPLC.[Pubmed: 19685749]
    To develop a reserved-phase HPLC method for the determination of praeruptorin A, praeruptorin B, Qianhucoumarin E in roots of Peucedanum praeruptorum.
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    Agilent TC-C18 column (4.6 mm x 250 mm, 5 microm) was used at 30 degrees C with the mobile phase of methanol-water (75:25). The flow rate was set at 0.8 mL x min(-1). The detection wavelength was 321 nm. The linear response ranged from 3.20-28.80 microg for +/- praeruptorin A (r = 0.9999, n = 5), 1.60-14.40 g for praeruptorin B (r = 0.9995, n = 5) and 1.64-14.76 g for Qianhucoumarin E (r = 0.9994, n = 5), respectively. Recoveries were 98.92% with RSD 1.6% for praeruptorin A, 99.66% with RSD 1.5% for praeruptorin B and 99.72% with RSD 1.4% for Qianhucoumarin E.
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