ChemFaces is a professional high-purity natural products manufacturer.
Product Intended Use
1. Reference standards
2. Pharmacological research
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* Packaging according to customer requirements(5mg, 10mg, 20mg and more). We shipped via FedEx, DHL, UPS, EMS and others courier.
More articles cited ChemFaces products.
Evidence-Based Comp. & Alter. Med.Dec. 27, 2015Pharmacogn Mag.2015 Jul-Sep.Fitoterapia. 2018 Jan;Front Pharmacol. 2016 Nov 30J Chromatogr B Analyt Tec. Bio. Life Sci. 2017 Oct 1;
Naunyn Schmiedebergs Arch Pharmacol. 2017 Jul 21. Korean Society of Pharm. Sci.2017;Phytomedicine. 2017 Jan 15;Am J Chin Med.2016;44(8)Evid Based Complement Alternat Med. 2017:1583185
Food Science and Biotechnology2015 Dec. 31J Nat Med.2017 Apr;J. Int. J. of Food Properties 13 Feb 2017Nutrients.2017 Dec 29;
Our products had been exported to the following research institutions and universities, And still growing.
Universidade do Porto (Portugal)Tokyo Woman's Christian University (Japan)Ateneo de Manila University (Philippines)University of British Columbia (Canada)
Centrum Menselijke Erfelijkheid (Belgium)The Vancouver Prostate Centre (V... (Canada)Mendel University in Brno (Czech Republic)Chungnam National University (Korea)
University of East Anglia (United Kingdom)Michigan State University (USA)Deutsches Krebsforschungszentrum (Germany)
Quassidine B Description
||The stems of Picrasma quassioides.
|Biological Activity or Inhibitors:
||Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
||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: firstname.lastname@example.org
||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.
Recent ChemFaces New Products and Compounds
Recently, ChemFaces products have been cited in many studies from excellent and top scientific journals
Cell. 2018 Jan 11;172(1-2):249-261.e12. doi: 10.1016/j.cell.2017.12.019.PMID: 29328914
Mol Cell. 2017 Nov 16;68(4):673-685.e6. doi: 10.1016/j.molcel.2017.10.022.PMID: 29149595
Scientific Reports 2017 Dec 11;7(1):17332.doi: 10.1038/s41598-017-17427-6.PMID: 29230013
Molecules. 2017 Oct 27;22(11). pii: E1829.doi: 10.3390/molecules22111829.PMID: 29077044
J Cell Biochem. 2018 Feb;119(2):2231-2239.doi: 10.1002/jcb.26385. PMID: 28857247
Phytomedicine. 2018 Feb 1;40:37-47. doi:10.1016/j.phymed.2017.12.030PMID: 29496173
Calculate Dilution Ratios(Only for Reference)
* Note: If you are in the process of experiment, it's need to make the dilution ratios of the samples. The dilution data of the sheet for your reference. Normally, it's can get a better solubility within lower of Concentrations.
Quassidine B References Information
Journal of Natural Products, 2010, 73(2):167-171.
|Quassidines A-D, bis-beta-carboline alkaloids from the stems of Picrasma quassioides.[Pubmed: 20095629]|
|Four new bis-beta-carboline alkaloids, quassidine A,Quassidine B, quassidine C, quassidine D (1-4), together with a known alkaloid, picrasidine C (5), were isolated from the stems of Picrasma quassioides. Quassidine A (1) is the first reported bis-beta-carboline alkaloid possessing a novel cyclobutane moiety. The structures of the new compounds were determined on the basis of their 1D and 2D NMR and X-ray diffraction data. A possible biogenetic pathway for these alkaloids was proposed, and all compounds were evaluated for anti-inflammatory activity. Only quassidine A (1) showed weak activity.