Erythromycin EP Impurity N CAS 3225-82-9

Purity >90%In StockPharmacopoeial Impurity Standards
CAS No.3225-82-9
Molecular FormulaC21H38O7
Molecular Weight402.52 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Erythromycin EP Impurity N CAS 3225-82-9 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 402.52 g/mol gives Erythromycin EP Impurity N distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Erythromycin EP Impurity N (CAS 3225-82-9) is a certified pharmaceutical impurity reference standard with the molecular formula C21H38O7 and a molecular weight of 402.52 g/mol.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, Erythromycin EP Impurity N is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 402.52 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 Erythromycin EP Impurity N 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 FormulaC21H38O7
Molecular Weight402.52 g/mol
Purity>90%
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)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1957

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