Etoricoxib impurity 65 CAS 856434-46-3

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.856434-46-3
Molecular FormulaC4H8ClN
Molecular WeightN/A
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Etoricoxib impurity 65 CAS 856434-46-3 chemical structure

Description

Etoricoxib impurity 65 (CAS 856434-46-3) is a certified pharmaceutical impurity reference standard with the molecular formula C4H8ClNHCl and a molecular weight of 142.02 g/mol.

Etoricoxib impurity 65 (C4H8ClNHCl) contains chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.

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.

Physical & Chemical Properties

Molecular FormulaC4H8ClN HCl
Molecular Weight142.02 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)0.0
CAS Registry Year (est.)1987
Halogen ContentCl-containing
Nitrogen Atoms1

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