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CorticosteroidsIn stockAPI reference standardPh. Eur.

Betamethasone EP CRS

JR-ST1009

European Pharmacopoeia (EP) Chemical Reference Substance of Betamethasone (9-fluoro-11β,17,21-trihydroxy-16β-methylpregna-1,4-diene-3,20-dione); potent glucocorticoid API standard for compendial assay and identification.

1 variant listed — see below

Structure & identifiers

2D structure — select to enlarge

Catalogue code
JR-ST1009
Category
Corticosteroids
CAS number
378-44-9
Grade
API reference standard
Pharmacopoeia
Ph. Eur.
Molecular formula
C22H29FO5
Molecular weight
392.47 g/mol
Pack sizes
25 mg · 50 mg · 100 mg · 500 mg
Record updated
12 Nov 2026

Chemical name

Betamethasone EP CRS

SMILES

C[C@@H]1C[C@H]2[C@@H]3CCC4=CC(=O)C=C[C@]4(C)[C@@]3(F)[C@@H](O)C[C@]2(C)[C@@]1(O)C(=O)CO

Compound identity, CAS number, formula and structure are referenced from public chemical databases. Contact us to confirm availability, pack sizes and documentation for your order.

Betamethasone EP CRS

25 mg · ×1