Omeprazole 4-Desmethyl Impurity

About Omeprazole 4-Desmethyl Impurity

Omeprazole 4-Desmethyl Impurity is a metabolite or degradation product of Omeprazole carrying the CAS registry number 301669-82-9. The compound has the formula C16H17N3O3S, corresponding to a molecular weight of 331.4 g/mol. Systematically, it is named 2-[(6-methoxy-1H-benzimidazol-2-yl)sulfinylmethyl]-3,5-dimethyl-1H-pyridin-4-one. Common synonyms include 4-Hydroxy Omeprazole and 4'-O-Desmethylomeprazole.

It is supplied as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. Handle it with standard laboratory precautions and appropriate personal protective equipment.

Analytical teams use this compound to identify metabolites and degradants of Omeprazole, to validate stability-indicating methods (AMV) and to support QC and regulatory filings. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, Omeprazole 4-Desmethyl Impurity is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Metabolite identification
Stability-indicating methods
Impurity profiling

Industries

Related to Omeprazole

View every impurity, metabolite and intermediate we list for Omeprazole.

Omeprazole impurities

Specifications & identifiers

Chemical identifiers
Product name	Omeprazole 4-Desmethyl Impurity
Catalogue No.	VQ-007217
CAS Number	301669-82-9
Other CAS	1803449-15-1
IUPAC name	2-[(6-methoxy-1H-benzimidazol-2-yl)sulfinylmethyl]-3,5-dimethyl-1H-pyridin-4-one
Molecular formula	C₁₆H₁₇N₃O₃S
Molecular weight	331.4 g/mol
Exact mass	331.0991
Grade	Reference Standard
HSN code	38229090
InChIKey	VSOAYQZFYNZNKR-UHFFFAOYSA-N
SMILES	CC1=CNC(=C(C1=O)C)CS(=O)C2=NC3=C(N2)C=C(C=C3)OC
PubChem CID	9840523

Physical properties
Physical form	Solid
LogP (XLogP3)	1.5
H-bond donors / acceptors	2 / 6
TPSA	103 Å²
Synonyms	2-(((6-methoxy-1H-benzo[d]imidazol-2-yl)sulfinyl)methyl)-3,5-dimethylpyridin-4-ol, 2-[[(6-Methoxy-1H-benzimidazol-2-yl)sulfinyl]methyl]-3,5-dimethyl-4-pyridinol, 4-Hydroxy Omeprazole, 4'-O-Desmethylomeprazole, 2-((6-Methoxy-1H-benzimidazole-2-sulfinyl)methyl)-3,5-dimethylpyridin-4(1H)-one, 2-[(6-Methoxy-1H-benzimidazole-2-sulfinyl)methyl]-3,5-dimethylpyridin-4(1H)-one, Desmethoxy Keto Esomeprazole, Esomeprazole Impurity 40, 4-Hydroxy Omeprazole Preparation Kit, 2-(((5-methoxy-1H-benzo[d]imidazol-2-yl)sulfinyl)methyl)-3,5-dimethylpyridin-4(1H)-one, Esomeprazole Impurity 98, Esomeprazol Impurity H215

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Omeprazole 4-Desmethyl Impurity?

The CAS Registry Number of Omeprazole 4-Desmethyl Impurity is 301669-82-9. It is also known as 2-(((6-methoxy-1H-benzo[d]imidazol-2-yl)sulfinyl)methyl)-3,5-dimethylpyridin-4-ol, 2-[[(6-Methoxy-1H-benzimidazol-2-yl)sulfinyl]methyl]-3,5-dimethyl-4-pyridinol, 4-Hydroxy Omeprazole.

What is the molecular formula and molecular weight of Omeprazole 4-Desmethyl Impurity?

Omeprazole 4-Desmethyl Impurity has the molecular formula C16H17N3O3S and a molecular weight of 331.4 g/mol. Its IUPAC name is 2-[(6-methoxy-1H-benzimidazol-2-yl)sulfinylmethyl]-3,5-dimethyl-1H-pyridin-4-one.

What is Omeprazole 4-Desmethyl Impurity used for?

Omeprazole 4-Desmethyl Impurity is supplied as a characterised reference material related to Omeprazole. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Omeprazole 4-Desmethyl Impurity can I order?

We supply Omeprazole 4-Desmethyl Impurity in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Omeprazole 4-Desmethyl Impurity?

Yes. Every lot of Omeprazole 4-Desmethyl Impurity is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Omeprazole 4-Desmethyl Impurity be shipped internationally?

Yes. We export Omeprazole 4-Desmethyl Impurity worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.