|Source:||The stems of Picrasma quassioides.|
|Biological Activity or Inhibitors:|
|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||2.2099 mL||11.0495 mL||22.099 mL||44.1979 mL||55.2474 mL|
|5 mM||0.442 mL||2.2099 mL||4.4198 mL||8.8396 mL||11.0495 mL|
|10 mM||0.221 mL||1.1049 mL||2.2099 mL||4.4198 mL||5.5247 mL|
|50 mM||0.0442 mL||0.221 mL||0.442 mL||0.884 mL||1.1049 mL|
|100 mM||0.0221 mL||0.1105 mL||0.221 mL||0.442 mL||0.5525 mL|
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.|