|Description:||1. 1,2,3,6-Tetragalloylglucose has antioxidative activity.|
2. 1,2,3,6-Tetragalloylglucose shows the most potent anticomplement activity (IC(50), 34 microM).
|Source:||The peel of Punica granatum L.|
|Solvent:||DMSO, Pyridine, Methanol, Ethanol, etc.|
|Storage:||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: email@example.com
|After receiving:||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.|
|1 mg||5 mg||10 mg||20 mg||25 mg|
|1 mM||1.2681 mL||6.3406 mL||12.6812 mL||25.3624 mL||31.703 mL|
|5 mM||0.2536 mL||1.2681 mL||2.5362 mL||5.0725 mL||6.3406 mL|
|10 mM||0.1268 mL||0.6341 mL||1.2681 mL||2.5362 mL||3.1703 mL|
|50 mM||0.0254 mL||0.1268 mL||0.2536 mL||0.5072 mL||0.6341 mL|
|100 mM||0.0127 mL||0.0634 mL||0.1268 mL||0.2536 mL||0.317 mL|
Biosci Biotechnol Biochem. 2008 Aug;72(8):2158-63.
|Antioxidative activities of galloyl glucopyranosides from the stem-bark of Juglans mandshurica.[Pubmed: 18685223]|
|Two phenolics, 1,2,6-trigalloylglucose (1) and 1,2,3,6-Tetragalloylglucose (2), isolated from the stem-bark of Juglans mandshurica were evaluated for their antioxidative activities. The results showed that compounds 1 and 1,2,3,6-Tetragalloylglucose exhibited strong scavenging activities against 1,1'-diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azino-bis-(3-ethylbenzenthiazoline-6-sulphonic) acid (ABTS(*+)), and superoxide radicals (O(2)(*-)), and also had a significant inhibitory effect on lipid peroxidation and low-density lipoprotein (LDL) oxidation. The strong superoxide radical scavenging of 1 and 1,2,3,6-Tetragalloylglucose resulted from the potential competitive inhibition with xanthine at the active site of xanthine oxidase (OX). In addition, compounds 1 and 1,2,3,6-Tetragalloylglucose displayed significant lipoxygenase inhibitory activity, the mode of inhibition also being identified as competitive. In comparison, the antioxidative activities of compounds 1 and 1,2,3,6-Tetragalloylglucose, together with gallic acid, indicated that the number of galloyl moieties could play an important role in the antioxidative activity.|
Biol Pharm Bull. 2003 Jul;26(7):1042-4.
|Anti-complement activity of constituents from the stem-bark of Juglans mandshurica.[Pubmed: 12843637 ]|
|Four known flavonoids and two galloyl glucoses isolated from the stem-bark of Juglans mandshurica (Juglandaceae), namely taxifolin (1), afzelin (2), quercitrin (3), myricitrin (4), 1,2,6-trigalloylglucose (5), and 1,2,3,6-Tetragalloylglucose (6), were evaluated for their anti-complement activity against complement system. Afzelin (2) and quercitrin (3) showed inhibitory activity against complement system with 50% inhibitory concentrations (IC(50)) values of 258 and 440 microM. 1,2,6-Trigalloylglucose (5) and 1,2,3,6-Tetragalloylglucose (6) exhibited anti-complement activity with IC(50) values of 136 and 34 microM. In terms of the evaluation of the structure-activity relationship of 3,5,7-trihydroxyflavone, compounds 2, 3, and 4 were hydrolyzed with naringinase to give kaempferol (2a), quercetin (3a), and myricetin (4a) as their aglycones, and these were also tested for their anti-complement activity. Of the three aglycones, kaempferol (2a) exhibited weak anti-complement activity with an IC(50) value of 730 microM, while quercetin (3a) and myricetin (4a) were inactive in this assay system. Among the compounds tested, 1,2,3,6-Tetragalloylglucose (6) showed the most potent anticomplement activity (IC(50), 34 microM).|
Hum Exp Toxicol. 2011 Sep;30(9):1415-9.
|Inhibition effects of the classical pathway complement of isolated compounds from Quercus glauca.[Pubmed: 21078772]|
|Four galloyl derivatives isolated from the leaves of Q. glauca, namely 6'-O-galloyl salidroside (1), methyl gallate (2), 1,2,3,6-Tetragalloylglucose (3), and 1,2,6-trigalloylglucose (4). 1, 2, 3 and 4 showed inhibitory activity against complement system with 50% inhibitory concentrations (IC(50)) values of 224 μM, 362.4 μM, 32.3 μM, and 138.3 μM. Among the compounds tested, 1,2,3,6-Tetragalloylglucose showed the most potent anticomplement activity (IC(50), 32.3 μM). This is the first report of the isolation and anticomplement activity from Q. glauca.|