|Source:||The herbs of Hypericum perforatum L.|
|Biological Activity or Inhibitors:||1. 3, 8''-Biapigenin can modulate intracellular ROS production.
|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||1.857 mL||9.2851 mL||18.5701 mL||37.1402 mL||46.4253 mL|
|5 mM||0.3714 mL||1.857 mL||3.714 mL||7.428 mL||9.2851 mL|
|10 mM||0.1857 mL||0.9285 mL||1.857 mL||3.714 mL||4.6425 mL|
|50 mM||0.0371 mL||0.1857 mL||0.3714 mL||0.7428 mL||0.9285 mL|
|100 mM||0.0186 mL||0.0929 mL||0.1857 mL||0.3714 mL||0.4643 mL|
Phytochemistry. 2009 Jan;70(2):244-9.
|Cellular reactive oxygen species inhibitory constituents of Hypericum thasium Griseb.[Pubmed: 19203769 ]|
|The phytochemical investigation of the ethyl acetate extract of Hypericum thasium has led to the characterization of four benzophenone derivatives 1-4, a known benzophenone 5 and four known flavonoids, quercetin (6), quercitrin (7), isoquercetin (8), and 3, 8''-biapigenin (9). Lucigenin- and luminal-based chemiluminescence assays were employed to monitor the inhibitory activity of these compounds towards the production of reactive oxygen species (ROS) by human polymorphoneutrophils (PMNs). The assay results showed that benzophenones 1 and 3 are extracellular inhibitors of ROS production, while flavonoids 6, 8, and 9 can modulate intracellular ROS production.|