Econazole impurity 18 CAS 24155-45-1

Description

Compared with other compounds in its class, the molecular weight of 222.67 g/mol gives Econazole impurity 18 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Econazole impurity 18 (CAS 24155-45-1) is a certified pharmaceutical impurity reference standard with the molecular formula C11H11ClN2O and a molecular weight of 222.67 g/mol.

The molecular framework of Econazole impurity 18 (C11H11ClN2O) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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

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