Ethyl 5,7-dimethoxy-4-oxo-1,4-dihydroquinoline-3-carboxylate CAS 82419-92-9

Description

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

Ethyl 5,7-dimethoxy-4-oxo-1,4-dihydroquinoline-3-carboxylate (CAS 82419-92-9), molecular formula C14H15NO5 and molecular weight 277.27 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of Ethyl 5,7-dimethoxy-4-oxo-1,4-dihydroquinoline-3-carboxylate (C14H15NO5) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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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