Sigma-Aldrich does not test the Product W4394, Withaferin A, for solution stability. Information in our files indicates that although it is best to use freshly prepared solution when possible. However, if stock solutions must be stored, we would recommend they be stored in frozen aliquots at -20°C or below for about one month.
W4394
Withaferin A
≥95% (HPLC)
Synonym(s):
5,6-Epoxy-4,27-dihydroxy-1-oxowitha-2,24-dienolide, Withaferine A
Sign Into View Organizational & Contract Pricing
All Photos(1)
Select a Size
Change View
5 MG
€565.00
About This Item
Empirical Formula (Hill Notation):
C28H38O6
CAS Number:
Molecular Weight:
470.60
MDL number:
UNSPSC Code:
12352211
PubChem Substance ID:
NACRES:
NA.77
Recommended Products
biological source
plant (Withania somnifera)
Quality Level
Assay
≥95% (HPLC)
form
powder
mp
252-253 °C
functional group
epoxy
ketone
shipped in
ambient
storage temp.
2-8°C
SMILES string
C[C@H]([C@H]1CC(C)=C(CO)C(=O)O1)[C@H]2CC[C@H]3[C@@H]4C[C@H]5O[C@]56[C@@H](O)C=CC(=O)[C@]6(C)[C@H]4CC[C@]23C
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
InChI key
DBRXOUCRJQVYJQ-CKNDUULBSA-N
Application
Withaferin A was used to treat HEK293 cells to study its effect on cystic fibrosis inflammation.[1]
Biochem/physiol Actions
Steroidal lactone that exhibits cytotoxicity towards tumor cells. Protective effects attributed to anti-lipid peroxidative, antioxidant and detoxifying functionality.
Withaferin A is a steroidal lactone that is isolated from the plant Withania somnifera. It has potent anti-inflammatory properties as it inhibits the activation of NF-κ B signaling pathway.[2] The anti-tumor activity of Withaferin A is due to its ability to alter cytoskeletal architecture by binding annexin II and disrupting F actin cross-links.[3] Withaferin A also inhibits angiogenesis by binding to vimentin and F-actin.[4]
Preparation Note
Withaferin A yields a clear, colorless solution in methanol at 1 mg/ml.
Storage Class Code
13 - Non Combustible Solids
WGK
WGK 3
Flash Point(F)
438.8 °F
Flash Point(C)
226 °C
Choose from one of the most recent versions:
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
Customers Also Viewed
Inhibition of NFκB by the natural product Withaferin A in cellular models of Cystic Fibrosis inflammation
Maitra R et al
Journal of Inflammation (London, England), 6, doi: 10-doi: 10 (2009)
Silvia D Stan et al.
Nutrition and cancer, 60 Suppl 1, 51-60 (2008-11-15)
Withaferin A (WA) is derived from the medicinal plant Withania somnifera that has been safely used for centuries in the Indian Ayurvedic medicine for treatment of various ailments. We now demonstrate that WA treatment causes G2 and mitotic arrest in
Paola Bargagna-Mohan et al.
Chemistry & biology, 14(6), 623-634 (2007-06-23)
The natural product withaferin A (WFA) exhibits antitumor and antiangiogenesis activity in vivo, which results from this drug's potent growth inhibitory activities. Here, we show that WFA binds to the intermediate filament (IF) protein, vimentin, by covalently modifying its cysteine
Huanjie Yang et al.
PloS one, 7(8), e41214-e41214 (2012-08-23)
The medicinal plant Withania somnifera has been used for over centuries in Indian Ayurvedic Medicine to treat a wide spectrum of disorders. Withaferin A (WA), a bioactive compound that is isolated from this plant, has anti-inflammatory, immuno-modulatory, anti-angiogenic, and anti-cancer
Abhinav Grover et al.
BMC genomics, 13 Suppl 7, S20-S20 (2013-01-11)
Leishmaniasis is caused by several species of leishmania protozoan and is one of the major vector-born diseases after malaria and sleeping sickness. Toxicity of available drugs and drug resistance development by protozoa in recent years has made Leishmaniasis cure difficult
-
What is the solution stability of Product W4394, Withaferin A?
1 answer-
Helpful?
-
-
What is the Department of Transportation shipping information for this product?
1 answer-
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
Helpful?
-
-
How does the storage temperature relate to shipping conditions?
1 answer-
The storage conditions that a Sigma-Aldrich catalog and label recommend for products are deliberately conservative. For many products, long-term storage at low temperatures will increase the time during which they are expected to remain in specification and therefore are labeled accordingly. Where short-term storage, shipping time frame, or exposure to conditions other than those recommended for long-term storage will not affect product quality, Sigma-Aldrich will ship at ambient temperature. The products sensitive to short-term exposure to conditions other than their recommended long-term storage are shipped on wet or dry ice. Ambient temperature shipping helps to control shipping costs for our customers. At any time, our customers can request wet- or dry-ice shipment, but the special handling is at customer expense if our product history indicates that the product is stable for regular shipment.
Helpful?
-
-
How does one solubilize Product W4394, Withaferin A?
1 answer-
Sigma-Aldrich tests Product W4394, Withaferin A, for solubility using methanol at a concentration of 1 mg/mL. Information in our files indicates that it is also soluble in DMSO and ethanol.
Helpful?
-
Active Filters
Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.
Contact Technical Service
