3,5-Diethyl 6-({[(4-chlorophenyl)carbamoyl]amino}amino)-2-oxo-1,2-dihydropyridine-3,5-dicarboxylate CAS 321432-00-2

Description

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.

3,5-Diethyl 6-({[(4-chlorophenyl)carbamoyl]amino}amino)-2-oxo-1,2-dihydropyridine-3,5-dicarboxylate (CAS 321432-00-2), molecular formula C18H19ClN4O6 and molecular weight 422.82 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 3,5-Diethyl 6-({[(4-chlorophenyl)carbamoyl]amino}amino)-2-oxo-1,2-dihydropyridine-3,5-dicarboxylate (C18H19ClN4O6) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 422.82 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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.

Physical & Chemical Properties

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