Isoastilbin

CAS# 54081-48-0

Isoastilbin

Catalog No. BCN5719----Order now to get a substantial discount!

Product Name & Size Price Stock
Isoastilbin: 5mg $161 In Stock
Isoastilbin: 10mg Please Inquire In Stock
Isoastilbin: 20mg Please Inquire Please Inquire
Isoastilbin: 50mg Please Inquire Please Inquire
Isoastilbin: 100mg Please Inquire Please Inquire
Isoastilbin: 200mg Please Inquire Please Inquire
Isoastilbin: 500mg Please Inquire Please Inquire
Isoastilbin: 1000mg Please Inquire Please Inquire
Related Products

Quality Control of Isoastilbin

Number of papers citing our products

Chemical structure

Isoastilbin

3D structure

Chemical Properties of Isoastilbin

Cas No. 54081-48-0 SDF Download SDF
PubChem ID 9981176 Appearance Powder
Formula C21H22O11 M.Wt 450.4
Type of Compound Flavonoids Storage Desiccate at -20°C
Solubility Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc.
Chemical Name (2R,3S)-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-[(2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxy-2,3-dihydrochromen-4-one
SMILES CC1C(C(C(C(O1)OC2C(OC3=CC(=CC(=C3C2=O)O)O)C4=CC(=C(C=C4)O)O)O)O)O
Standard InChIKey ZROGCCBNZBKLEL-OOHAXVOVSA-N
Standard InChI InChI=1S/C21H22O11/c1-7-15(26)17(28)18(29)21(30-7)32-20-16(27)14-12(25)5-9(22)6-13(14)31-19(20)8-2-3-10(23)11(24)4-8/h2-7,15,17-26,28-29H,1H3/t7-,15-,17+,18+,19+,20+,21-/m0/s1
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Source of Isoastilbin

The rhizome of Simlax glabra Roxb.

Biological Activity of Isoastilbin

DescriptionIsoastilbin has anti-acne and tyrosinase inhibition properties.Isoastilbin, neoastilbin, astilbin and taxifolin have antimicrobial activities, they depress the growth of Streptococcus sobrinus (S. sobrinus) over a concentration range of 9.32-42.7 ug/ml and show GTase inhibitory activity with IC50 values in the range 27.4-57.3 ug/ml.
TargetsAntifection | Tyrosinase | GTase
In vitro

Antimicrobial activity against Streptococcus sobrinus and glucosyltransferase inhibitory activity of taxifolin and some flavanonol rhamnosides from kempas (Koompassia malaccensis) extracts[Reference: WebLink]

J. Wood Sci., 2009, 55(4):308-13.

Twenty plant materials collected from the islands of Java and Kalimantan in Indonesia were extracted with 50% aqueous ethanol (crude extract).
METHODS AND RESULTS:
The crude extracts were assayed for antimicrobial activities against Streptococcus sobrinus and for glucosyltransferase (GTase) inhibition. Fourteen extracts inhibited the growth of S. sobrinus by more than 50% and six extracts inhibited GTase activity by more than 50% at a concentration of 100 μg/ml. Koompassia malaccensis (kempas) extracts showed 90% depression of S. sobrinus growth and 80% inhibition of GTase activity at a concentration of 100 μg/ml. Kempas crude extracts were subjected to column chromatography using Sephadex LH-20 and then preparative high-performance liquid chromatography to isolate four compounds A, B, C, and D. These compounds were identified as taxifolin and the flavanonol rhamnoside isomers neoastilbin, astilbin, and Isoastilbin, respectively, from 1H and 13C nuclear magnetic resonance (NMR) spectra and other two-dimensional NMR techniques (COSY, HMBC, and HMQC). Each compound depressed the growth of S. sobrinus over a concentration range of 9.3242.7 μg/ml and showed GTase inhibitory activity with IC₅₀ values in the range 27.4-57.3 μg/ml.
CONCLUSIONS:
Taxifolin and flavanonol rhamnoside isomers isolated for the first time from kempas could be potent compounds for preventing dental caries.

Anti-acne and Tyrosinase Inhibition Properties of Taxifolin and Some Flavanonol Rhamnosides from Kempas ( Koompassia malaccensis )[Reference: WebLink]

Wood Research Journal ,2010, 1(1):45-9.

Taxifolin (1) and some flavanonol rhamnosides (neoastilbin (2), astilbin (3), and Isoastilbin (4)) have been isolated from kempas (Koompassia malaccensis). Our previous research about antimicrobial activity against Streptococcus sobrinus and glucosyltransferase inhibitory activity of these compounds have been reported.
METHODS AND RESULTS:
Now, we carried out the antiacne and tyrosinase inhibition properties of all four compounds. Antimicrobial against Propionibacterium acnes, P. acnes lipase inhibitory activity and antioxidant activity were established for anti-acne activity. Tyrosinase inhibition property was measured using L-tyrosine and L-DOPA as substrate. The results for anti-acne showed that no antimicrobial activity against P. acnes for all compounds, the best lipase inhibition properties showed on compound 4 with IC50 about 1.36 g/ml, and % inhibition for antioxidant at concentration 10 g/ml are 31.16, 25.64, 28.47, and 31.01% respectively. Tyrosinase inhibition of compound 1 at concentration 1 mg/ml is 24.12% for monophenolase and 5.18% for diphenolase. Compound 2 has tyrosinase inhibition about 25.95% (monophenolase) and 14.18% (diphenolase) at concentration 1 mg/ml. Compound 3 has tyrosinase inhibition about 27.17% (monophenolase) and 6.23% (diphenolase) at same concentration, while compound 4 has tyrosinase inhibition about 11.17% (monophenolase) and 9.75% (diphenolase).

Protocol of Isoastilbin

Structure Identification
Yao Xue Xue Bao. 1996;31(10):761-3.

Studies on the structure of isoastilbin.[Pubmed: 9863244]

A new compound was isolated from Smilax glabra Roxb., named Isoastilbin. It was identified as 5, 7, 3', 5'-tetrahydroxyl-flavanonol-3-O-alpha-L-rhamnopyranoside by means of chemical and spectrometric analysis (UV, IR, 1H-NMR, 13C-NMR, 2DNMR and FAB-MS).

Isoastilbin Dilution Calculator

Concentration (start)
x
Volume (start)
=
Concentration (final)
x
Volume (final)
 
 
 
C1
V1
C2
V2

calculate

Isoastilbin Molarity Calculator

Mass
=
Concentration
x
Volume
x
MW*
 
 
 
g/mol

calculate

Preparing Stock Solutions of Isoastilbin

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 2.2202 mL 11.1012 mL 22.2025 mL 44.405 mL 55.5062 mL
5 mM 0.444 mL 2.2202 mL 4.4405 mL 8.881 mL 11.1012 mL
10 mM 0.222 mL 1.1101 mL 2.2202 mL 4.4405 mL 5.5506 mL
50 mM 0.0444 mL 0.222 mL 0.444 mL 0.8881 mL 1.1101 mL
100 mM 0.0222 mL 0.111 mL 0.222 mL 0.444 mL 0.5551 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

Organizitions Citing Our Products recently

 
 
 

Calcutta University

University of Minnesota

University of Maryland School of Medicine

University of Illinois at Chicago

The Ohio State University

University of Zurich

Harvard University

Colorado State University

Auburn University

Yale University

Worcester Polytechnic Institute

Washington State University

Stanford University

University of Leipzig

Universidade da Beira Interior

The Institute of Cancer Research

Heidelberg University

University of Amsterdam

University of Auckland
TsingHua University
TsingHua University
The University of Michigan
The University of Michigan
Miami University
Miami University
DRURY University
DRURY University
Jilin University
Jilin University
Fudan University
Fudan University
Wuhan University
Wuhan University
Sun Yat-sen University
Sun Yat-sen University
Universite de Paris
Universite de Paris
Deemed University
Deemed University
Auckland University
Auckland University
The University of Tokyo
The University of Tokyo
Korea University
Korea University
Featured Products
New Products
 

References on Isoastilbin

[Studies on the structure of isoastilbin].[Pubmed:9863244]

Yao Xue Xue Bao. 1996;31(10):761-3.

A new compound was isolated from Smilax glabra Roxb., named Isoastilbin. It was identified as 5, 7, 3', 5'-tetrahydroxyl-flavanonol-3-O-alpha-L-rhamnopyranoside by means of chemical and spectrometric analysis (UV, IR, 1H-NMR, 13C-NMR, 2DNMR and FAB-MS).

Keywords:

Isoastilbin,54081-48-0,Natural Products, buy Isoastilbin , Isoastilbin supplier , purchase Isoastilbin , Isoastilbin cost , Isoastilbin manufacturer , order Isoastilbin , high purity Isoastilbin

Online Inquiry for:

      Fill out the information below

      • Size:Qty: - +

      * Required Fields

                                      Result: