Olmesartan Impurity 78 CAS 133909-97-4

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.133909-97-4
Molecular FormulaC33H26N4
Molecular Weight478.59 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Olmesartan Impurity 78 CAS 133909-97-4 chemical structure

Description

The molecular framework of Olmesartan Impurity 78 (C33H26N4) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

CATO supplies Olmesartan Impurity 78 (CAS 133909-97-4), a pharmacopoeial impurity reference standard (molecular formula C33H26N4, MW 478.59 g/mol) used for the identification and quantification of trace impurities in APIs.

Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.

CATO manufactures Olmesartan Impurity 78 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC33H26N4
Molecular Weight478.59 g/mol
AppearancePale yellow to yellow crystalline powder
Purity>95%
StorageStore at room temperature, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)23.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1995
Nitrogen Atoms4

Related Olmesartan Standards

Recommended Standards

Why CATO?