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Withaferin A

Chemical Structure : Withaferin A

CAS No.: 5119-48-2

Withaferin A

Catalog No.: PC-62155Not For Human Use, Lab Use Only.

Withaferin A is a steroid lactone that displays anti-inflammatory, antitumor and antiangiogenic activity, potently inhibits NF-κB activation by preventing the TNF-induced activation of IKKβ via a thioalkylation-sensitive redox mechanism.

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Biological Activity

Withaferin A is a steroid lactone that displays anti-inflammatory, antitumor and antiangiogenic activity, potently inhibits NF-κB activation by preventing the TNF-induced activation of IKKβ via a thioalkylation-sensitive redox mechanism.
Withaferin A potently inhibits the chymotrypsin-like activity of a purified rabbit 20S proteasome (IC50=4.5 uM) and 26S proteasome in human prostate cancer cultures (at 5-10 uM) and xenografts (4-8 mg/kg/day), inhibits cell proliferation in HUVECs (IC50 =12 nM).

Physicochemical Properties

M.Wt 470.6
Formula C28H38O6
Appearance Solid
CAS No.
Storage
Solide Powder
-20 °C 12 Months; 4°C 6 Months
In Solvent
-80 °C 6 Months; -20°C 6 Months
Shipping
Solubility

10 mM in DMSO

Chemical Name/SMILES

(4β,5β,6β,22R)-5,6-Epoxy-4,22,27-trihydroxy-1-oxoergosta-2,24-dien-26-oic acid δ-lactone

References

1. Falsey RR, et al. Nat Chem Biol. 2006 Jan;2(1):33-8.

2. Kaileh M, et al. J Biol Chem. 2007 Feb 16;282(7):4253-64.

3. Yang H, et al. Mol Pharmacol. 2007 Feb;71(2):426-37.

4. Mohan R, et al. Angiogenesis. 2004;7(2):115-22.

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