1-(4-Chloro-phenyl)-3-[4-(6-dimethylamino-4-trifluoromethyl-pyridin-2-yl)-phenyl]-urea CAS 1311278-08-6

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-(4-Chloro-phenyl)-3-[4-(6-dimethylamino-4-trifluoromethyl-pyridin-2-yl)-phenyl]-urea (CAS 1311278-08-6), molecular formula C21H18ClF3N4O and molecular weight 434.84 g/mol, is a CATO reference standard with documented purity and traceability.

1-(4-Chloro-phenyl)-3-[4-(6-dimethylamino-4-trifluoromethyl-pyridin-2-yl)-phenyl]-urea (C21H18ClF3N4O) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine/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.

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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