Clobetasone Butyrate EP Impurity I

Name: Clobetasone Butyrate EP Impurity I
Brand: Vaqora Chemicals
SKU: VQ-025034

About Clobetasone Butyrate EP Impurity I

Clobetasone Butyrate EP Impurity I (CAS 639817-47-3) is a pharmacopeial impurity of Clobetasone butyrate offered by Vaqora Chemicals. Formula C26H32ClFO5, molecular weight 479.0 g/mol. Alternative names: Clobetasone Butyrate - Impurity I and 17-o-Isobutyryl clobetasone.

It is supplied as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Good laboratory practice and suitable PPE are recommended during handling.

This Clobetasone butyrate impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies Clobetasone Butyrate EP Impurity I in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Pharmacopeial method verification
Impurity profiling
QC release testing
ANDA / DMF filings

Industries

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Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Clobetasone Butyrate EP Impurity I
Catalogue No.	VQ-025034
CAS Number	639817-47-3
IUPAC name	[(8S,9R,10S,13S,14S,16S,17R)-17-(2-chloroacetyl)-9-fluoro-10,13,16-trimethyl-3,11-dioxo-7,8,12,14,15,16-hexahydro-6H-cyclopenta[a]phenanthren-17-yl] 2-methylpropanoate
Molecular formula	C₂₆H₃₂ClFO₅
Molecular weight	479 g/mol
Exact mass	478.1922
Grade	Reference Standard
HSN code	38229090
InChIKey	KJKUAXYCSXHEGA-AVVSTMBFSA-N
SMILES	C[C@H]1C[C@H]2[C@@H]3CCC4=CC(=O)C=C[C@@]4([C@]3(C(=O)C[C@@]2([C@]1(C(=O)CCl)OC(=O)C(C)C)C)F)C
PubChem CID	156613988

Physical properties
Physical form	Solid
LogP (XLogP3)	4
H-bond donors / acceptors	0 / 6
TPSA	77.5 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 Clobetasone Butyrate EP Impurity I?

The CAS Registry Number of Clobetasone Butyrate EP Impurity I is 639817-47-3. It is also known as Clobetasone Butyrate - Impurity I, 17-o-Isobutyryl clobetasone, 21-Chloro-9-fluoro-16beta-methyl-3,11,20-trioxopregna-1,4-dien-17-yl 2-methylpropanoate.

What is the molecular formula and molecular weight of Clobetasone Butyrate EP Impurity I?

Clobetasone Butyrate EP Impurity I has the molecular formula C26H32ClFO5 and a molecular weight of 479 g/mol.

What is Clobetasone Butyrate EP Impurity I used for?

Clobetasone Butyrate EP Impurity I is supplied as a characterised reference material related to Clobetasone butyrate. 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 Clobetasone Butyrate EP Impurity I can I order?

We supply Clobetasone Butyrate EP Impurity I 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 Clobetasone Butyrate EP Impurity I?

Yes. Every lot of Clobetasone Butyrate EP Impurity I 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 Clobetasone Butyrate EP Impurity I be shipped internationally?

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