Biological Activity
Steroid lactone that displays anti-inflammatory, antitumor and antiangiogenic activity. Inhibits endothelial cells (HUVEC) sprouting in vitro (IC50 = 12 nM) and in vivo. Prevents NF-κB activation by inhibiting activation of IKKβ. Also inhibits chymotrypsin-like activity of the 20S proteasome.
Technical Data
| M. Wt | 470.6 |
| Formula | C28H38O6 |
| Storage | Desiccate at -20°C |
| Purity | ≥98% (HPLC) |
| CAS Number | 5119-48-2 |
| PubChem ID | 45489105 |
| InChI Key | DBRXOUCRJQVYJQ-WDBPBROTSA-N |
| Smiles | O=C1[C@@]2(C)[C@@]([C@H]5C[C@]3([H])C2CC[C@@]4(C)[C@]([H])3CC[C@@H]4[C@@H]([C@]6([H])OC(C(CO)=C(C)C6)=O)C)(O5)[C@@H](O)C=C1 |
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
All Tocris products are intended for laboratory research use only.
Solubility Data
| Solvent | Max Conc. mg/mL | Max Conc. mM | |
|---|---|---|---|
| Solubility | |||
| DMSO | 4.71 | 10 | |
| ethanol | 2.35 | 5 |
Preparing Stock Solutions
The following data is based on the product molecular weight 470.6. Batch specific molecular weights may vary from batch to batch due to solvent of hydration, which will affect the solvent volumes required to prepare stock solutions.
| Concentration / Solvent Volume / Mass | 1 mg | 5 mg | 10 mg |
|---|---|---|---|
| 1 mM | 2.12 mL | 10.62 mL | 21.25 mL |
| 5 mM | 0.42 mL | 2.12 mL | 4.25 mL |
| 10 mM | 0.21 mL | 1.06 mL | 2.12 mL |
| 50 mM | 0.04 mL | 0.21 mL | 0.42 mL |
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Product Datasheets
References
References are publications that support the products' biological activity.
Mohan et al (2004) Withaferin A is a potent inhibitor of angiogenesis. Angiogenesis 7 115 PMID: 15516832
Yang et al (2007) The tumor proteasome is a primary target for the natural anticancer compound withaferin A isolated from "Indian Winter Cherry". Mol.Pharmacol. 71 426 PMID: 17093135
Kaileh et al (2007) Withaferin A strongly elicits IkB kinase β hyperphosphorylation concomitant with potent inhibition of its kinase activity. J.Biol.Chem. 282 4253 PMID: 17150968
Keywords: Withaferin A, supplier, inhibitors, inhibits, NF-κB, NF-kappaB, NF-kB, activation, Nuclear, Factor, Kappa, B, Cytokine, Signaling, Signalling, Transcription, Factors, WithaferinA, NF-kB/IkB, NF-kB/IkB, Tocris Bioscience
