Ropinirole Impurity 21 CAS CATO-C4X-174521

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-174521
Molecular FormulaC16H24N2
Molecular Weight244.38 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Ropinirole Impurity 21 CAS CATO-C4X-174521 chemical structure

Description

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Ropinirole Impurity 21 (CAS CATO-C4X-174521) is a certified pharmaceutical impurity reference standard with the molecular formula C16H24N2 and a molecular weight of 244.38 g/mol.

Based on its molecular formula C16H24N2, Ropinirole Impurity 21 contains a nitrogen-containing heterocyclic scaffold, a nitrile group; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 244.38 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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.

Physical & Chemical Properties

Molecular FormulaC16H24N2
Molecular Weight244.38 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
Nitrogen Atoms2

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