Etizolam Impurity 34 CAS 40054-69-1

Description

Compared with other compounds in its class, the molecular weight of 342.85 g/mol gives Etizolam Impurity 34 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Etizolam Impurity 34 (CAS 40054-69-1) is a certified pharmaceutical impurity reference standard with the molecular formula C17H15ClN4S and a molecular weight of 342.85 g/mol.

The molecular framework of Etizolam Impurity 34 (C17H15ClN4S) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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.

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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