Withanolide A

Name: Withanolide A
Brand: Vaqora Chemicals
SKU: VQ-042967

About Withanolide A

Withanolide A (CAS 32911-62-9) is a high-purity reference standard of N methylpyrrolidone offered by Vaqora Chemicals. The compound has the formula C28H38O6, corresponding to a molecular weight of 470.6 g/mol.

The product is provided as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. Handle it with standard laboratory precautions and appropriate personal protective equipment.

Laboratories use this N methylpyrrolidone standard for identity and assay testing, system suitability checks and method validation supporting ANDA and DMF filings. Our customers for this product work in pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, Withanolide A is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Identification & assay
Method development & validation
QC reference material

Industries

Related to N methylpyrrolidone

View every impurity, metabolite and intermediate we list for N methylpyrrolidone.

N methylpyrrolidone impurities

Specifications & identifiers

Chemical identifiers
Product name	Withanolide A
Catalogue No.	VQ-042967
CAS Number	32911-62-9
IUPAC name	(1S,2S,4S,5R,10R,11S,14S,15S,18S)-15-[(1R)-1-[(2R)-4,5-dimethyl-6-oxo-2,3-dihydropyran-2-yl]-1-hydroxyethyl]-5-hydroxy-10,14-dimethyl-3-oxapentacyclo[9.7.0.02,4.05,10.014,18]octadec-7-en-9-one
Molecular formula	C₂₈H₃₈O₆
Molecular weight	470.6 g/mol
Exact mass	470.2668
Grade	Reference Standard
HSN code	38229090
InChIKey	DXWHOKCXBGLTMQ-SFQAJKIESA-N
SMILES	CC1=C(C(=O)O[C@H](C1)[C@@](C)([C@H]2CC[C@@H]3[C@@]2(CC[C@H]4[C@H]3[C@H]5[C@H](O5)[C@@]6([C@@]4(C(=O)C=CC6)C)O)C)O)C
PubChem CID	11294368

Physical properties
Physical form	Solid
LogP (XLogP3)	3.3
H-bond donors / acceptors	2 / 6
TPSA	96.4 Å²

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Withanolide A?

The CAS Registry Number of Withanolide A is 32911-62-9. It is also known as (5alpha,6alpha,7alpha,22R)-5,20-Dihydroxy-6,7:22,26-diepoxyergosta-2,24-diene-1,26-dione, (22R)-5,20-Dihydroxy-5alpha,6alpha-6,7:22,26-diepoxyergosta-2,24-diene-1,26-dione.

What is the molecular formula and molecular weight of Withanolide A?

Withanolide A has the molecular formula C28H38O6 and a molecular weight of 470.6 g/mol.

What is Withanolide A used for?

Withanolide A is supplied as a characterised reference material related to N methylpyrrolidone. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Withanolide A can I order?

We supply Withanolide A in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Withanolide A?

Yes. Every lot of Withanolide A is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Withanolide A be shipped internationally?

Yes. We export Withanolide A worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.