6,7-Dichloro-2-methyl-3-phenylquinoxaline CAS 70071-10-2

Description

Compared with other compounds in its class, the molecular weight of 289.16 g/mol gives 6,7-Dichloro-2-methyl-3-phenylquinoxaline distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

6,7-Dichloro-2-methyl-3-phenylquinoxaline (CAS 70071-10-2), molecular formula C15H10Cl2N2 and molecular weight 289.16 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution, 6,7-Dichloro-2-methyl-3-phenylquinoxaline is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 289.16 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

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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