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analytical standard Analytical standard for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
Store at 2-8°C Ships Wet ice Check lot-specific COA for exact specifications.
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
Cited in 1 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
Withaferin A, a steroidal lactone originally purified from Withania somnifera, has been shown to have potent antiangiogenesis activity in vivo as well as potent growth inhibitory activities. This compound binds to Vimentin, the intermediate filament (IF) protein, and causes Vimentin filaments to aggregate in vitro. Furthermore, experiments have demonstrated that Withaferin-induced inhibition of capillary growth in a mouse model of corneal neovascularization was compromised in Vimentin-deficient mice. Additional experiments have reported Withaferin A to be a proteasome inhibitor, with a specific primary target for 20S proteasome β5 subunit. Withaferin A demonstrates the potential to inhibit NFκB activation by prevention of tumor necrosis factor-activated IκB kinase β via a thioalkylation-sensitive redox mechanism. In other studies, Withaferin A was also observed to alter cytoskeletal architecture by covalently binding Annexin II and stimulating its basal F-actin cross-linking activity. Another characteristic of Withaferin A that has been noted is it's ability to induce regeneration of axons and dendrites and also reconstruct pre and postsynapses in neurons of mice.
An antiangiogenesis compound and poteasome inhibitor.
| Sonrisas canónicas | CC1=C(C(=O)OC(C1)C(C)C2CCC3C2(CCC4C3CC5C6(C4(C(=O)C=CC6O)C)O5)C)CO |
|---|---|
| IUPAC Name | (1S,2R,6S,7R,9R,11S,12S,15R,16S)-6-hydroxy-15-[(1S)-1-[(2R)-5-(hydroxymethyl)-4-methyl-6-oxo-2,3-dihydropyran-2-yl]ethyl]-2,16-dimethyl-8-oxapentacyclo[9.7.0.02,7.07,9.012,16]octadec-4-en-3-one |
| InChIKey | DBRXOUCRJQVYJQ-CKNDUULBSA-N |
| INCHI | 1S/C28H38O6/c1-14-11-21(33-25(32)17(14)13-29)15(2)18-5-6-19-16-12-24-28(34-24)23(31)8-7-22(30)27(28,4)20(16)9-10-26(18,19)3/h7-8,15-16,18-21,23-24,29,31H,5-6,9-13H2,1-4H3/t15-,16-,18+,19-,20-,21+,23-,24+,26+,27-,28+/m0/s1 |
| Isómeros SMILES | CC1=C(C(=O)O[C@H](C1)[C@@H](C)[C@H]2CC[C@@H]3[C@@]2(CC[C@H]4[C@H]3C[C@@H]5[C@]6([C@@]4(C(=O)C=C[C@@H]6O)C)O5)C)CO |
| PubChem CID | 265237 |
| Peso molecular | 470.6 |
Comprehensive hazard, handling, storage, and regulatory compliance document.
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View spec sheet →Taxonomy Tree
| Kingdom | Organic compounds |
|---|---|
| Superclass | Lipids and lipid-like molecules |
| Clase | Steroids and steroid derivatives |
| Subclass | Steroid lactones |
| Intermediate Tree Nodes | Not available |
| Direct Parent | Withanolides and derivatives |
| Alternative Parents | 5,6-epoxysteroids Oxepanes Dihydropyranones Cyclohexenones Enoate esters Secondary alcohols Lactones Oxacyclic compounds Monocarboxylic acids and derivatives Epoxides Dialkyl ethers Primary alcohols Organic oxides Hydrocarbon derivatives |
| Molecular Framework | Aliphatic heteropolycyclic compounds |
| Substituents | Withanolide-skeleton - 5,6-epoxysteroid - Dihydropyranone - Oxepane - Cyclohexenone - Pyran - Alpha,beta-unsaturated carboxylic ester - Enoate ester - Carboxylic acid ester - Ketone - Lactone - Secondary alcohol - Oxacycle - Carboxylic acid derivative - Organoheterocyclic compound - Dialkyl ether - Oxirane - Ether - Monocarboxylic acid or derivatives - Carbonyl group - Hydrocarbon derivative - Organic oxide - Organic oxygen compound - Alcohol - Organooxygen compound - Primary alcohol - Aliphatic heteropolycyclic compound |
| Descripción | This compound belongs to the class of organic compounds known as withanolides and derivatives. These are c28 steroids structurally characterized by an ergostane skeleton usually functionalized at carbons 1, 22 and 26 to form a lactone ring. |
| External Descriptors | Steroids |
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Find and download the COA for your product by matching the lot number on the packaging.
| Lot Number | Certificate Type | Fecha | Articulo |
|---|---|---|---|
| Certificate of Analysis | Jun 08, 2023 | W134988 |
| Solubilidad | Soluble in ethanol, and DMSO |
|---|---|
| Peso molecular | 470.600 g/mol |
| XLogP3 | 3.800 |
| Hydrogen Bond Donor Count | 2 |
| Hydrogen Bond Acceptor Count | 6 |
| Rotatable Bond Count | 3 |
| Exact Mass | 470.267 Da |
| Monoisotopic Mass | 470.267 Da |
| Topological Polar Surface Area | 96.400 Ų |
| Heavy Atom Count | 34 |
| Formal Charge | 0 |
| Complexity | 999.000 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 11 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| The total count of all stereochemical bonds | 0 |
| Covalently-Bonded Unit Count | 1 |
| 1. Xiaodong Sun, Bingqing Qin, Ai Guo, Jianjun Gui, Jingjing Weng, Junjie Ye, Shenglan Feng, Ming Sang. (2025) Withaferin A maintained microbiome and metabolome features in A53T transgenic mice via multi-omics integrated analysis. PHYTOMEDICINE, [PMID:40220427] [10.1016/j.phymed.2025.156725] |
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