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CorticosteroidsIn stockImpurity reference standardPh. Eur.

Hydrocortisone Acetate Impurity B

JR-ST1005-03

Variant ofHydrocortisone Acetate EP CRS

Cortexolone 21-acetate (Reichstein's Substance S 21-acetate; 17-hydroxy-3,20-dioxopregn-4-en-21-yl acetate); 11-deoxy process impurity of hydrocortisone acetate (EP Impurity B).

Structure & identifiers

2D structure — select to enlarge

Catalogue code
JR-ST1005-03
Category
Corticosteroids
CAS number
641-77-0
Grade
Impurity reference standard
Pharmacopoeia
Ph. Eur.
Molecular formula
C23H32O5
Molecular weight
388.50 g/mol
Pack sizes
25 mg · 50 mg · 100 mg · 500 mg
Record updated
12 Nov 2026

Chemical name

Hydrocortisone Acetate Impurity B

SMILES

CC(=O)OCC(=O)[C@@]1(O)CC[C@H]2[C@@H]3CCC4=CC(=O)CC[C@]4(C)[C@H]3CC[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.

Hydrocortisone Acetate Impurity B

25 mg · ×1