Naltrexone impurity 33 CAS CATO-C4X-147533

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-147533
Molecular FormulaC20H21NO6
Molecular Weight371.38 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Naltrexone impurity 33 CAS CATO-C4X-147533 chemical structure

Description

CATO supplies Naltrexone impurity 33 (CAS CATO-C4X-147533), a pharmacopoeial impurity reference standard (molecular formula C20H21NO6, MW 371.38 g/mol) used for the identification and quantification of trace impurities in APIs.

Naltrexone impurity 33 (C20H21NO6) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 Naltrexone impurity 33 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 FormulaC20H21NO6
Molecular Weight371.38 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
Nitrogen Atoms1

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