|Source:||The herbs of Celastrus orbiculatus|
|Biological Activity or Inhibitors:||1. (+)-Afzelechin has a neuroprotective effect on the glutamate-induced neurotoxicity in HT22 cells, it has ABTS cation radical scavenging effects with IC50 values of 23.7 microM, suggests that it could be neuroprotectants owing to their free radical scavenging activities.
2. (+)-Afzelechin has inhibitory compound of alpha-glucosidase activity, the ID(50) (50% inhibition dose) value is 0.13 mM.
3. (+)-Afzelechin shows moderate to strong radical scavenging properties against diphenylpicrylhydrazyl radical (DPPH) and improves the reduced glutathione levels in rat pancreatic homogenate.
|Solvent:||Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, 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||3.6456 mL||18.2282 mL||36.4564 mL||72.9129 mL||91.1411 mL|
|5 mM||0.7291 mL||3.6456 mL||7.2913 mL||14.5826 mL||18.2282 mL|
|10 mM||0.3646 mL||1.8228 mL||3.6456 mL||7.2913 mL||9.1141 mL|
|50 mM||0.0729 mL||0.3646 mL||0.7291 mL||1.4583 mL||1.8228 mL|
|100 mM||0.0365 mL||0.1823 mL||0.3646 mL||0.7291 mL||0.9114 mL|
Phytochemistry. 2008 Jan;69(2):451-6.
|Antioxidant aryl-prenylcoumarin, flavan-3-ols and flavonoids from Eysenhardtia subcoriacea.[Pubmed: 17892888]|
|Antioxidant activity (AOA) assay-guided chemical analysis, using a rat pancreas homogenate model, of aerial parts from Eysenhardtia subcoriacea, led to isolation of the new compound subcoriacin (3-(2'-hydroxy-4',5'-methylendioxyphenyl)-6-(3''-hydroxymethyl-4''-hydroxybut-2''-enyl)-7-hydroxycoumarin) together with the known substances: (+)-catechin, (-)-epicatechin, (+)-Afzelechin, eriodictyol, (+)-catechin 3-O-beta-D-galactopyranoside and quercetin 3-O-beta-D-galactopyranoside as bioactive constituents. The structure of the compound was determined from 1D and 2D NMR spectroscopic analyses. Additional known constituents were characterized. The bioactive compounds showed also moderate to strong radical scavenging properties against diphenylpicrylhydrazyl radical (DPPH). In addition, subcoriacin, (+)-catechin, (-)-epicatechin and (+)-Afzelechin improved the reduced glutathione levels in rat pancreatic homogenate.|
J Oleo Sci. 2008;57(8):431-5.
|Alpha-glucosidase inhibitor from Bergenia ligulata.[Pubmed: 18622126]|
|Inhibitory compound of alpha-glucosidase activity, (+)-Afzelechin (1), was isolated from rhizomes of Bergenia ligulata. The structure was identified by IR, EI-MS, (1)H and (13)C NMR spectroscopy. The ID(50) (50% inhibition dose) value of compound 1 was 0.13 mM. To investigate the structure-activity relationship, (+)-Afzelechin tetraacetate (2), (+)-5,7,4'-trimethoxyafzelechin (3), (+)-tetramethoxyafzelechin (4), and (+)-3-acetyl-5,7,4'-trimethoxyafzelechin (5) as the derivatives of compound 1 were evaluated as well.|
Arch Pharm Res. 2005 Jul;28(7):804-9.
|Neuroprotective and free radical scavenging activities of phenolic compounds from Hovenia dulcis.[Pubmed: 16114495]|
|The EtOAc-soluble fraction from a methanolic extract of Hovenia dulcis Thunb. exhibited neuroprotective activity against glutamate-induced neurotoxicity in mouse hippocampal HT22 cells. The neuroprotective activity-guided isolation resulted in 8 phenolic compounds (1-8), such as vanillic acid (1), ferulic acid (2), 3,5-dihydroxystilbene (3), (+)-aromadendrin (4), methyl vanillate (5), (-)-catechin (6), 2,3,4-trihydrobenzoic acid (7), and (+)-Afzelechin (8). Among these, compounds 6 and 8 had a neuroprotective effect on the glutamate-induced neurotoxicity in HT22 cells. Furthermore, compound 6 had a DPPH free radical scavenging effect with an IC50 value of 57.7 microM, and a superoxide anion radical scavenging effect with an IC50 value of 8.0 microM. Both compounds 6 and 8 had ABTS cation radical scavenging effects with IC50 values of 7.8 microM and 23.7 microM, respectively. These results suggest that compounds 6 and 8 could be neuroprotectants owing to their free radical scavenging activities.|