Betamethasone Impurity 20

Name: Betamethasone Impurity 20
Brand: Vaqora Chemicals
SKU: VQ-004527

About Betamethasone Impurity 20

Listed under CAS 4735-65-3, Betamethasone Impurity 20 is an impurity of Betamethasone available from Vaqora Chemicals, specified at 89.3% purity. The compound has the formula C24H31BrO6, corresponding to a molecular weight of 495.4 g/mol. It is also known as Betamethasone Impurity 39.

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.

Pharmaceutical QC and development laboratories use this impurity standard of Betamethasone to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies Betamethasone Impurity 20 in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide. This item is currently in stock for prompt dispatch.

Typical applications

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Industries

Related to Betamethasone

View every impurity, metabolite and intermediate we list for Betamethasone.

Betamethasone impurities

Specifications & identifiers

Chemical identifiers
Product name	Betamethasone Impurity 20
Catalogue No.	VQ-004527
CAS Number	4735-65-3
IUPAC name	[2-[(8S,9R,10S,11S,13S,14S,16S,17R)-9-bromo-11,17-dihydroxy-10,13,16-trimethyl-3-oxo-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-17-yl]-2-oxoethyl] acetate
Molecular formula	C₂₄H₃₁BrO₆
Molecular weight	495.4 g/mol
Exact mass	494.1304
Grade	Reference Standard
Purity / assay	89.3%
HSN code	38229090
InChIKey	PLVGDQKUTWULDB-QZIXMDIESA-N
SMILES	C[C@H]1C[C@H]2[C@@H]3CCC4=CC(=O)C=C[C@@]4([C@]3([C@H](C[C@@]2([C@]1(C(=O)COC(=O)C)O)C)O)Br)C
PubChem CID	97640119

Physical properties
Physical form	Solid
LogP (XLogP3)	3.2
H-bond donors / acceptors	2 / 6
TPSA	101 Å²
Synonyms	21-(Acetyloxy)-9-bromo-11b,17-dihydroxy-16b-methyl-pregna-1,4-diene-3,20-dione, (11β,16β)-21-(Acetyloxy)-9-bromo-11,17-dihydroxy-16-methylpregna-1,4-diene-3,20-dione, 21-(Acetyloxy)-9-Bromo-11beta,17-Dihydroxy-16beta-Methyl-Pregna-1,4-Diene-3,20-Dione, 9-Bromo-11beta,17,21-trihydroxy-16beta-methyl-pregna-1,4-diene-3,20-dione 21-Acetate, Betamethasone Impurity 39, (11, A,16, A)-21-(Acetyloxy)-9-bromo-11,17-dihydroxy-16-methylpregna-1,4-diene-3,20-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 Betamethasone Impurity 20?

The CAS Registry Number of Betamethasone Impurity 20 is 4735-65-3. It is also known as 21-(Acetyloxy)-9-bromo-11b,17-dihydroxy-16b-methyl-pregna-1,4-diene-3,20-dione, (11β,16β)-21-(Acetyloxy)-9-bromo-11,17-dihydroxy-16-methylpregna-1,4-diene-3,20-dione, 21-(Acetyloxy)-9-Bromo-11beta,17-Dihydroxy-16beta-Methyl-Pregna-1,4-Diene-3,20-Dione.

What is the molecular formula and molecular weight of Betamethasone Impurity 20?

Betamethasone Impurity 20 has the molecular formula C24H31BrO6 and a molecular weight of 495.4 g/mol.

What is Betamethasone Impurity 20 used for?

Betamethasone Impurity 20 is supplied as a characterised reference material related to Betamethasone. 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 Betamethasone Impurity 20 can I order?

We supply Betamethasone Impurity 20 in Reference Standard (89.3%) grade, in 10 mg, 25 mg, 50 mg, 100 mg, 250 mg, 500 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Betamethasone Impurity 20?

Yes. Every lot of Betamethasone Impurity 20 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 Betamethasone Impurity 20 be shipped internationally?

Yes. We export Betamethasone Impurity 20 worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.