Ursodeoxycholic Acid EP Impurity H CAS 78919-26-3

Purity >80%In StockPharmacopoeial Impurity Standards
CAS No.78919-26-3
Molecular FormulaC24H40O4
Molecular Weight392.57 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Ursodeoxycholic Acid EP Impurity H CAS 78919-26-3 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 392.57 g/mol gives Ursodeoxycholic Acid EP Impurity H distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Ursodeoxycholic Acid EP Impurity H (CAS 78919-26-3) is a certified pharmaceutical impurity reference standard with the molecular formula C24H40O4 and a molecular weight of 392.57 g/mol.

The molecular framework of Ursodeoxycholic Acid EP Impurity H (C24H40O4) is characterized by a steroid core, a hydroxyl group, an ether linkage. 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 presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.

CATO manufactures Ursodeoxycholic Acid EP Impurity H 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 FormulaC24H40O4
Molecular Weight392.57 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity>80%
StorageStore at room temperature, keep sealed and dry
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1979

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