Taxifolin 3-O-beta-D-xylopyranoside | CAS:40672-47-7

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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.

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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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Chemical constituents of ethyl acetate extract from Polygonum perfoliatum.[Pubmed: 23252271]

METHODS AND RESULTS:
The chemical constituents of Polygonum perfoliatum were isolated and purified by chromatography on silica gel, Sephadex LH-20 and Semi-preparative HPLC. The structures of compounds were elucidated and identified by physicochemical properties, H-NMR, 13C-NMR and ESI-MS. Ten compounds were isolated and identified as 5-hydroxymethyl-2-furaldEhyde (1), methyl caffeoate (2), protocatechuic aldehyde (3), quercetin (4), pinocernbrin (5), catechin (6), taxifolin (7), Taxifolin 3-O-beta-D-xylopyranoside (8), 13-epitorulosal (9), coumarin-7-O-beta-D-glucose glycosidic (10).
CONCLUSIONS:
Compounds 6-9 are isolated from this plant for the first time.

Product Name	Taxifolin 3-O-beta-D-xylopyranoside
CAS No.:	40672-47-7
Catalog No.:	CFN98637
Molecular Formula:	C₂₀H₂₀O₁₁
Molecular Weight:	436.4 g/mol
Purity:	>=98%
Type of Compound:	Flavonoids
Physical Desc.:	Powder
Source:	The herbs of Polygonum perfoliatum
Solvent:	DMSO, Pyridine, Methanol, Ethanol, etc.
Price: