Polygalic acid
Polygalic acid, a triterpenoid saponin, shows expectorant, emetic and stimulant 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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Biomed Chromatogr. 2012 Feb;26(2):220-4.
In vivo metabolism study of polygalic acid in rat using HPLC-ESI-MSn.[Pubmed:
21618563 ]
A very simple and direct method has been established for the determination of Polygalic acid and its metabolites in rat urine based on HPLC coupled with electrospray ionization multi-stage tandem mass spectrometry (HPLC-ESI-MS(n)).
METHODS AND RESULTS:
The rats were administered a single dose (100 mg/kg) of Polygalic acid by oral gavage. The urine samples were collected and purified through a C(18) solid-phase extraction cartridge, and then these pretreated samples were injected into a reversed-phase C(18) column with a gradient elution program, whereas acetonitrile-0.5% aqueous formic acid was used as mobile phase and detected by an on-line MS/MS system. As a result, the parent drug and its four metabolites were identified and characterized in rat urine for the first time by comparing their changes in molecular mass (ΔM), retention times and full-scan MS(n) spectra with those of the parent drug. A possible metabolic pathway of Polygalic acid was investigated and proposed.
CONCLUSIONS:
More importantly, the results demonstrated that the newly developed method (HPLC-ESI-MS(n)) was sensitive, simple and suitable for the determination of Polygalic acid and its metabolites in biological samples.
