Bergaptol-beta-glucopyranoside
Reference standards.
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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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Chinese Traditional and Herbal Drugs, 2011,42(1):96-102.
Absorption and transportation characteristic of six linear furocoumarins in a model of Caco-2 cell monolayer in human intestine.[Reference:
WebLink]
To study the absorption and transportation characteristic of xanthotoxol (1), xanthotoxin (2), imperatorin (3), isoimperatorin (4), cnidilin (5), and isopimpinellin (6), which were classified as the linear type furocoumarins, in a model of Caco-2 cell monolayers in human intestinal epithelium. Methods: Caco-2 (the human colon adenocarcinoma cell lines) cell monolayer was used as an intestinal epithelial cell model. The permeability of the six coumarins from apical side (AP side) to basolateral side (BL side) or from BL side to AP side was evaluated. The concentration of the six coumarins was measured by HPLC coupled with UV detector. Transportation parameters and permeability coefficients (Papp) were then calculated, and P app values were compared with the reported values for model compounds, Propranolol and Atenolol. Based on the absorption and transportation characteristic of coumarins 1-6, and psoralen (7), bergaptol (8), bergaptol-O-β-D-glucopyranoside (Bergaptol-beta-glucopyranoside
,9), bergapten (10), nodakenin (11), nodakenetin (12), decuroside V (13), umbelliferone (14), osthole (15), angelol-A (16), and angelol-B (17) in a model of Caco-2 cell monolayer, the relationship of absorption and transportation with diversed chemical structures and lipophilicity was reviewed. In the Caco-2 cell monolayer model, the Papp magnitudes of the linear furocoumarins 1-6 were 10-5 cm/s in the bi-directional transport, which was identical with Propranolol. And the permeability of Caco-2 cell monolayer is mainly via passive absorption.
CONCLUSIONS:
The above-mentioned linear furocoumarins 1-6 are well-absorbed compounds. The results show that a significant Sigmoid dependence of permeability on 1g Papp AP→BL and 1g D at pH 7.35 of all 1-17 furocoumarins can be absorbed across intestinal epithelial cells by passive diffusion mechanism.
Chem Pharm Bull (Tokyo). 1990 Sep;38(9):2498-502.
Isolation of two new coumarin glycosides from Notopterygium forbesii and evaluation of a Chinese crude drug, qiang-huo, the underground parts of N. incisum and N. forbesii, by high-performance liquid chromatography.[Pubmed:
2285981 ]
METHODS AND RESULTS:
From the ether extract of the underground part of Notopterygium forbesii, two new coumarin glycosides, bergaptol-O-beta-D-glucopyranoside(Bergaptol-beta-glucopyranoside) and 6'-O-trans-feruloylnodakenin, were isolated along with known compounds including seven furanocoumarins, two dihydrofuranocoumarins, a sterol glucoside and two phenolic compounds. Analysis of their contents by high-performance liquid chromatography (HPLC) revealed that the underground part of N. forbesii contained large amounts of p-hydroxphenethyl anisate (0.7%), bergaptol glucoside (0.2%), nodakenin (2%) and 6'-O-trans-feruloylnodakenin (0.7%) and a lesser amount of notopterol (0.08%), while that of N. incisum contained a large amount of notopterol (1.2%) and less amounts of the others.
CONCLUSIONS:
The characteristic difference in chemical composition between the two species enabled us to identify the respective botanical sources of a Chinese crude drug, Qiang-huo derived from N. incisum and N. forbesii by HPLC.
