Erythromycin EP Impurity L CAS 127955-44-6

Description

Compared with other compounds in its class, the molecular weight of 747.91 g/mol gives Erythromycin EP Impurity L distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Erythromycin EP Impurity L (CAS 127955-44-6), a pharmacopoeial impurity reference standard (molecular formula C37H65NO14, MW 747.91 g/mol) used for the identification and quantification of trace impurities in APIs.

The molecular framework of Erythromycin EP Impurity L (C37H65NO14) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, 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).

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.

As a certified reference material (CRM), Erythromycin EP Impurity L meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Why CATO?

• ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
• 130,000+ catalog items in stock, COA supplied with every batch
• Worldwide shipping with full export documentation (HS code guidance available)
• Technical support: +86 18665070610 / Nicole.chen@cato-chem.com