1-(2,3-Dimethylquinoxalin-6-yl)-3-(4-methoxyphenyl)urea CAS 672949-99-4

Description

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.

1-(2,3-Dimethylquinoxalin-6-yl)-3-(4-methoxyphenyl)urea (CAS 672949-99-4), molecular formula C18H18N4O2 and molecular weight 322.36 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, 1-(2,3-Dimethylquinoxalin-6-yl)-3-(4-methoxyphenyl)urea is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 322.36 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).

As a certified reference material (CRM), 1-(2,3-Dimethylquinoxalin-6-yl)-3-(4-methoxyphenyl)urea 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

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