5-O-Methylvisammioside
5-O-Methylvisammioside is a naturally occuring product isolated from Saposhnikovia Divaricata and has analgesic, antipyretic, anti-inflammatory and anti-platelet aggregation effects.
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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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Phytochem Anal. 2011 Jul-Aug;22(4):313-21.
Application of response surface methodology to optimise ultrasonic-assisted extraction of four chromones in Radix Saposhnikoviae.[Pubmed:
21438050]
Radix Saposhnikoviae is one of the most famous Chinese herbal medicines with many pharmacological activities towards inflammatory symptoms and antioxidation. Chromones are considered as one of the effective components. It is important to find a reasonable method to extract the chromones in S. divaricata.
To develop an ultrasonic-assisted extraction (UAE) to extract chromones in Radix Saposhnikoviae and to optimise extraction conditions.
METHODS AND RESULTS:
Four chromones (prim-O-glucosylcimifugin, cimifugin, 5-O-Methylvisammioside and sec-O-glucosylhamaudol) were extracted by the UAE method combined with response surface methodology (RSM). Box-Behnken design (BBD) was applied to evaluate the effects of three independent variables (ethanol concentration, extraction time and extraction temperature) on the chromones yield of Radix Saposhnikoviae.
Correlation analysis of the mathematical-regression model indicated that a quadratic polynomial model could be employed to optimise the extraction of chromones by UAE method. The optimal conditions to obtain the highest chromones yield of Radix Saposhnikoviae were a solvent of 75% ethanol, an extraction time of 48 min and an extraction temperature of 67°C.
CONCLUSIONS:
Under these optimal conditions, the experimental values agreed closely with the predicted values. The analysis of variance indicated a high goodness of model fit and the success of RSM method for optimising chromones extraction in Radix Saposhnikoviae.
