Carbamazepine Impurity 36 CAS 35079-97-1

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.35079-97-1
Molecular FormulaC15H14N2O3
Molecular Weight270.28 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Carbamazepine Impurity 36 CAS 35079-97-1 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 270.28 g/mol gives Carbamazepine Impurity 36 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Carbamazepine Impurity 36 (CAS 35079-97-1) is a certified pharmaceutical impurity reference standard with the molecular formula C15H14N2O3 and a molecular weight of 270.28 g/mol.

Structurally, Carbamazepine Impurity 36 (C15H14N2O3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 270.28 g/mol, it falls into the medium-molecular-weight range. 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.

As a certified reference material (CRM), Carbamazepine Impurity 36 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 FormulaC15H14N2O3
Molecular Weight270.28 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)10.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1967
Nitrogen Atoms2

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