Withanone

About Withanone

Withanone is a high-purity reference standard of Ascorbic acid carrying the CAS registry number 27570-38-3. Its molecular formula is C28H38O6 and its molecular weight is 470.6 g/mol. Common synonyms include (22R)-5|A,17|A-Dihydroxy-6|A,7|A.

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. Good laboratory practice and suitable PPE are recommended during handling.

As a reference sample of Ascorbic acid, it is used for identification, assay and impurity-profiling work during analytical method development, validation (AMV) and routine QC. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

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

Typical applications

Identification & assay
Method development & validation
QC reference material

Industries

Related to Ascorbic acid

View every impurity, metabolite and intermediate we list for Ascorbic acid.

Ascorbic acid impurities

Specifications & identifiers

Chemical identifiers
Product name	Withanone
Catalogue No.	VQ-040759
CAS Number	27570-38-3
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]ethyl]-5,15-dihydroxy-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	FAZIYUIDUNHZRG-PCTWTJKKSA-N
SMILES	CC1=C(C(=O)O[C@H](C1)[C@@H](C)[C@]2(CC[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	21679027

Physical properties
Physical form	Solid
LogP (XLogP3)	3.1
H-bond donors / acceptors	2 / 6
TPSA	96.4 Å²
Synonyms	6,7-epoxy-5,17-dihydroxy-1-oxowitha-2,24-dienolide, (5alpha,6alpha,7alpha,22R)-5,17-Dihydroxy-6,7:22,26-diepoxyergosta-2,24-diene-1,26-dione, (22R)-5, A,17, A-Dihydroxy-6, A,7, A, (22R)-5,17-Dihydroxy-5alpha,6alpha,7alpha-6,7:22,26-diepoxyergosta-2,24-diene-1,26-dione

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 Withanone?

The CAS Registry Number of Withanone is 27570-38-3. It is also known as 6,7-epoxy-5,17-dihydroxy-1-oxowitha-2,24-dienolide, (5alpha,6alpha,7alpha,22R)-5,17-Dihydroxy-6,7:22,26-diepoxyergosta-2,24-diene-1,26-dione, (22R)-5.

What is the molecular formula and molecular weight of Withanone?

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

What is Withanone used for?

Withanone is supplied as a characterised reference material related to Ascorbic acid. 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 Withanone can I order?

We supply Withanone 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 Withanone?

Yes. Every lot of Withanone 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 Withanone be shipped internationally?

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