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CorticosteroidsIn stockImpurity reference standardPh. Eur.

Betamethasone Valerate EP Impurity H

JR-ST1001-02

Variant ofBetamethasone 17-Valerate EP CRS

Beclomethasone 17-valerate (9-chloro-11β,21-dihydroxy-16β-methyl-3,20-dioxopregna-1,4-dien-17-yl pentanoate); 9α-chloro analog of betamethasone 17-valerate (EP Impurity H / USP Related Compound H) used for related substances and system suitability testing.

Structure & identifiers

2D structure — select to enlarge

Catalogue code
JR-ST1001-02
Category
Corticosteroids
CAS number
52619-18-8
Grade
Impurity reference standard
Pharmacopoeia
Ph. Eur.
Molecular formula
C27H37ClO6
Molecular weight
493.04 g/mol
Pack sizes
25 mg · 50 mg · 100 mg · 500 mg
Record updated
12 Nov 2026

Chemical name

Betamethasone Valerate EP Impurity H

SMILES

CCCCC(=O)O[C@]1(C(=O)CO)[C@@H](C)C[C@H]2[C@@H]3CCC4=CC(=O)C=C[C@]4(C)[C@@]3(Cl)[C@@H](O)C[C@]12C

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 Valerate EP Impurity H

25 mg · ×1