Betamethasone Acid

About Betamethasone Acid

Betamethasone Acid is an impurity of Betamethasone carrying the CAS registry number 37926-75-3. With the molecular formula C21H27FO5, it has a molar mass of 378.4 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. Good laboratory practice and suitable PPE are recommended during handling.

As a characterised impurity of Betamethasone, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. It is used across pharmaceutical manufacturing and academic and industrial research.

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

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 Acid
Catalogue No.	VQ-020947
CAS Number	37926-75-3
IUPAC name	(8S,9R,10S,11S,13S,14S,16S,17R)-9-fluoro-11,17-dihydroxy-10,13,16-trimethyl-3-oxo-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthrene-17-carboxylic acid
Molecular formula	C₂₁H₂₇FO₅
Molecular weight	378.4 g/mol
Exact mass	378.1843
Grade	Reference Standard
HSN code	38229090
InChIKey	PFAGPIFFRLDBRN-IFUSVGBSSA-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)O)O)C)O)F)C
PubChem CID	12878401

Physical properties
Physical form	Solid
LogP (XLogP3)	2
H-bond donors / acceptors	3 / 6
TPSA	94.8 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 Betamethasone Acid?

The CAS Registry Number of Betamethasone Acid is 37926-75-3.

What is the molecular formula and molecular weight of Betamethasone Acid?

Betamethasone Acid has the molecular formula C21H27FO5 and a molecular weight of 378.4 g/mol. Its IUPAC name is (8S,9R,10S,11S,13S,14S,16S,17R)-9-fluoro-11,17-dihydroxy-10,13,16-trimethyl-3-oxo-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthrene-17-carboxylic acid.

What is Betamethasone Acid used for?

Betamethasone Acid 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 Acid can I order?

We supply Betamethasone Acid 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 Betamethasone Acid?

Yes. Every lot of Betamethasone Acid 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 Acid be shipped internationally?

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