(11β,16β,17β)-9-Fluoro-11-hydroxy-16-methyl-3-oxoandrosta-1,4-diene-17-carboxylic Acid
- CAS
- 1203841-43-3
- Formula
- C21H27FO4
- MW
- 362.4 g/mol
ZX-028935
Impurity reference standards
Betamethasone impurity standards
Zemixal lists 61 reference materials related to Betamethasone, covering the drug substance itself, its process impurities and the products it forms on storage. Among them are 26 pharmacopoeial impurities and 4 metabolites or hydroxylated analogues.
61reference materials
26pharmacopoeial
4metabolites
Batches are supplied with a certificate of analysis, and the supporting spectra can be sent ahead of a purchase order so your QA team can review them. Laboratories use them to validate related-substance methods, set specification limits under ICH Q3A and Q3B, and identify unknown peaks in stability samples.
By impurity type
Pharmacopoeial26EP, USP, BP or JP named impurities
Metabolites4Hydroxy, desmethyl and conjugated forms
Counts are based on product names. One compound can fall into more than one type.
All Betamethasone reference materials
1–60 of 61 standards
(17RS)-Betamethasone 20-hydroxy 21-acid impurity
- CAS
- 1155886-49-9
- Formula
- C22H29FO5
- MW
- 392.5 g/mol
ZX-023106
11β,17,21-Trihydroxy-16β-methylpregna-1,4-diene-3,20-dione
- CAS
- 2597-76-4
- Formula
- C22H30O5
- MW
- 374.5 g/mol
ZX-027693
Betamethasone Cyclic 17,21-(ethyl orthopropionate)
- CAS
- 1062-09-5
- Formula
- C27H37FO6
- MW
- 476.6 g/mol
ZX-012267
D-Homo C Derivative of Betamethasone Sodium Phosphate
- CAS
- 1201919-11-0
- Formula
- C22H28FNa2O8P
- MW
- 516.4 g/mol
ZX-020850
Questions
Betamethasone impurities, answered
How many Betamethasone impurity standards does Zemixal list?
The catalogue currently lists 61 compounds for Betamethasone, including 26 pharmacopoeial impurities and 4 metabolites or hydroxylated analogues. Each product page shows the CAS number where one is assigned, the structure, formula and molecular weight.
What documents come with a Betamethasone impurity standard?
A certificate of analysis travels with every lot. On request we share the characterisation set, usually 1H-NMR, mass spectrum, HPLC purity and IR, and for some materials TGA or water content. Ask for the data before ordering if your QA team needs to review it.
Can Zemixal make a Betamethasone impurity that is not listed?
Often yes. Send the structure, name or CAS number with the quantity you need and our sourcing team checks custom synthesis options, usually from 10 mg up to gram scale, with a quoted lead time.