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Pharmaceutical Secondary Standard; Certified Reference Material

Losec, 5-Methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-1H-benzimidazole, Antra
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:

Quality Level


certified reference material
pharmaceutical secondary standard


traceable to BP 765
traceable to Ph. Eur. O0150000
traceable to USP 1478505


current certificate can be downloaded


HPLC: suitable
gas chromatography (GC): suitable


forensics and toxicology
pharmaceutical (small molecule)



storage temp.


SMILES string




InChI key


Gene Information

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General description

Omeprazole is a benzimidazole drug, which exhibits antisecretory and antiulcer properties. It is widely used in the treatment of duodenal, gastric ulcers, reflux oesophagitis and against other acid-related diseases.
Pharmaceutical secondary standards for application in quality control, provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards.


These Secondary Standards are qualified as Certified Reference Materials. These are suitable for use in several analytical applications including but not limited to pharma release testing, pharma method development for qualitative and quantitative analyses, food and beverage quality control testing, and other calibration requirements.
Omeprazole may be used as a pharmaceutical reference standard for the determination of the analyte in pharmaceutical formulations using spectrophotometric technique and high-performance liquid chromatography technique.
Omeprazole may be used as a reference standard in the determination of omeprazole in pharmaceutical formulations using high performance thin layer chromatography (HPTLC).

Analysis Note

These secondary standards offer multi-traceability to the USP, EP (PhEur) and BP primary standards, where they are available.

Other Notes

This Certified Reference Material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis.


To see an example of a Certificate of Analysis for this material enter LRAC0716 in the slot below. This is an example certificate only and may not be the lot that you receive.

Storage Class Code

13 - Non Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

More Documents

Quotes and Ordering

A validated HPTLC method for determination of ondansetron in combination with omeprazole or rabeprazole in solid dosage form
Raval.B.P, et al.
Indian Journal of Pharmaceutical Sciences, 70(3), 386-386 (2008)
Extractive spectrophotometric determination of omeprazole in pharmaceutical preparations
Bhandage A, et al.
Tropical Journal of Pharmaceutical Research, 8(5), 1133-1142 (2009)
A validated normal phase HPLC method for simultaneous determination of drotaverine hydrochloride and omeprazole in pharmaceutical formulation
Topagi SK, et al.
Asian Journal of Pharmaceutical and Clinical Research, 3(1), 20-24 (2010)
Spectrophotometric determination of omeprazole, lansoprazole and pantoprazole in pharmaceutical formulations
Wahbi AAM, et al.
Journal of Pharmaceutical and Biomedical Analysis, 30(4), 1133-1142 (2002)
A proton-pump inhibitor expedition: the case histories of omeprazole and esomeprazole.
Lars Olbe et al.
Nature reviews. Drug discovery, 2(2), 132-139 (2003-02-04)

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