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Proton-pump inhibitorsIn stockImpurity reference standardPh. Eur.

Omeprazole Impurity D

JR-PP1001-01

Variant ofOmeprazole Sodium BP CRS

Omeprazole sulfone (5-methoxy-2-(((4-methoxy-3,5-dimethylpyridin-2-yl)methyl)sulfonyl)-1H-benzimidazole; USP Related Compound A / EP Impurity D); primary S-oxidation impurity and metabolite of omeprazole.

Structure & identifiers

2D structure — select to enlarge

Catalogue code
JR-PP1001-01
Category
Proton-pump inhibitors
CAS number
88546-55-8
Grade
Impurity reference standard
Pharmacopoeia
Ph. Eur.
Molecular formula
C17H19N3O4S
Molecular weight
361.42 g/mol
Pack sizes
25 mg · 50 mg · 100 mg · 500 mg
Record updated
12 Nov 2026

Chemical name

Omeprazole Impurity D

SMILES

COc1ccc2[nH]c(S(=O)(=O)Cc3ncc(C)c(OC)c3C)nc2c1

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.

Omeprazole Impurity D

25 mg · ×1