Ursodeoxycholic Acid EP Impurity D CAS 2955-27-3

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.2955-27-3
Molecular FormulaC24H40O5
Molecular Weight408.57 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Ursodeoxycholic Acid EP Impurity D CAS 2955-27-3 chemical structure

Description

Ursodeoxycholic Acid EP Impurity D (CAS 2955-27-3) is a certified pharmaceutical impurity reference standard with the molecular formula C24H40O5 and a molecular weight of 408.57 g/mol.

Owing to a steroid core, a hydroxyl group, an ether linkage, Ursodeoxycholic Acid EP Impurity D is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 408.57 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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 D 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 FormulaC24H40O5
Molecular Weight408.57 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity>95%
StorageStore at room temperature, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957

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