6-O-Caffeoylarbutin | CAS:136172-60-6 | Manufacturer ChemFaces

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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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Phenylethanoids, iridoids and a spirostanol saponin from Veronica turrilliana.[Reference: WebLink]

METHODS AND RESULTS:
From the aerial parts of Veronica turrilliana two phenylethanoid glycosides, turrilliosides A and B and a steroidal saponin, turrillianoside were isolated and their structures elucidated as beta-(3,4-dihydroxyphenyl)ethyl-4-O-E-caffeoyl-O-[beta-glucopyranosyl-(1 -> 4)-alpha-rhamnopyranosyl-(1 -> 6)]-beta-glucopyranoside, beta-(3,4-dihydroxyphenyl)ethyl-4-O-E-caffeoyl-[6-O-E-feruloyl-beta-gluc opyranosyl-(1 -> 4)-alpha-rhamnopyranosyl-(1 -> 6)]-beta-glucopyranoside and (23S, 25S)-12 beta,23-dihydroxyspirost-5-en-3 beta-yl O-alpha-rhamnopyranosyl-(1 -> 4))-beta-glucopyranoside, respectively. Furthermore, eight known glucosides are reported namely, catalpol, catalposide, verproside, amphicoside, isovanilloylcatalpol, aucubin, arbutin, and 6-O-E-caffeoylarbutin(6-O-Caffeoylarbutin), the latter two for the first time in the genus Veronica.
CONCLUSIONS:
The two phenylethanoid glycosides were found to be potent DPPH radical scavengers. All of the tested compounds were inactive against the representative species of fungi and bacteria.

Product Name	6-O-Caffeoylarbutin
CAS No.:	136172-60-6
Catalog No.:	CFN99427
Molecular Formula:	C₂₁H₂₂O₁₀
Molecular Weight:	434.4 g/mol
Purity:	>=98%
Type of Compound:	Phenylpropanoids
Physical Desc.:	Powder
Source:	The herbs of Viburnum dilatatum Thunb.
Solvent:	DMSO, Pyridine, Methanol, Ethanol, etc.
Price: