Certificate of Analysis

 

Product Name: Vernolide B
Catalog Number: M40392
CAS Number: 618860-58-5

Physical and Chemical Properties
Formula: C23H30O8
Molecular Weight: 434.48
Storage: Powder          -20°C   3 years ;  4°C   2 years
In solvent       -80°C   6 months ;  -20°C   1 month
Chemical Structure: Vernolide B Structure
Analytical Data
QC Standard: >98.0%
H-NMR: Consistent with structure
Product Information
Description: Vernolide-B has cytoxicity (ED50s: 3.78, 5.88, 6.42 μg/mL for KB, NCI-661, and HeLa cells respectively). Vernolide B is sesquiterpene lactone that can be isolated from Vernonia cinerea.
   
Stability and Solubility Advice: Information concerning product stability, particularly in solution, has rarely been reported and in most cases we can only offer a general guide.
We recommend that stock solutions, once prepared, are stored aliquoted in tightly sealed vials and used within 1 month. Avoid repeated freeze and thaw cycles. Storage conditions for some special products should refer to their storage details.