Captopril Impurity 35 CAS 613256-52-3

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.613256-52-3
Molecular FormulaC9H15NO4
Molecular Weight201.22 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Captopril Impurity 35 CAS 613256-52-3 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 201.22 g/mol gives Captopril Impurity 35 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Captopril Impurity 35 (CAS 613256-52-3) is a certified pharmaceutical impurity reference standard with the molecular formula C9H15NO4 and a molecular weight of 201.22 g/mol.

Structurally, Captopril Impurity 35 (C9H15NO4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 201.22 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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), Captopril Impurity 35 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 FormulaC9H15NO4
Molecular Weight201.22 g/mol
AppearanceWhite to pale yellow crystalline powder. (faint amine-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1985
Nitrogen Atoms1

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