Citalopram Impurity 66 CAS CATO-C4X-110966

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-110966
Molecular FormulaC20H24FNO4
Molecular Weight361.41 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Citalopram Impurity 66 CAS CATO-C4X-110966 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 361.41 g/mol gives Citalopram Impurity 66 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Citalopram Impurity 66 (CAS CATO-C4X-110966) is a certified pharmaceutical impurity reference standard with the molecular formula C20H24FNO4 and a molecular weight of 361.41 g/mol.

Structurally, Citalopram Impurity 66 (C20H24FNO4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 361.41 g/mol, it falls into the moderately-high-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), Citalopram Impurity 66 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 FormulaC20H24FNO4
Molecular Weight361.41 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor)
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; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)9.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
Halogen ContentF-containing
Nitrogen Atoms1

Related Citalopram Standards

Recommended Standards

Why CATO?