Ozanimod Impurity 21 CAS 1201447-05-3

Purity ＞95%In StockPharmacopoeial Impurity Standards
CAS No.1201447-05-3
Molecular FormulaC21H19N3O3
Molecular Weight361.39 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Ozanimod Impurity 21 CAS 1201447-05-3 chemical structure

Description

Ozanimod Impurity 21 (CAS 1201447-05-3) is a certified pharmaceutical impurity reference standard with the molecular formula C21H19N3O3 and a molecular weight of 361.39 g/mol.

Ozanimod Impurity 21 (C21H19N3O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, 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.

As a certified reference material (CRM), Ozanimod Impurity 21 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

Molecular FormulaC21H19N3O3
Molecular Weight361.39 g/mol
AppearancePale yellow to yellow crystalline powder
Purity＞95%
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)14.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1990
Nitrogen Atoms3

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