6-Ethyl-4-hydroxy-3-(4-nitrobenzyl)-2H-pyrano[3,2-c]quinoline-2,5(6H)-dione CAS 900019-42-3

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.

6-Ethyl-4-hydroxy-3-(4-nitrobenzyl)-2H-pyrano[3,2-c]quinoline-2,5(6H)-dione (CAS 900019-42-3), molecular formula C21H16N2O6 and molecular weight 392.36 g/mol, is a CATO reference standard with documented purity and traceability.

6-Ethyl-4-hydroxy-3-(4-nitrobenzyl)-2H-pyrano[3,2-c]quinoline-2,5(6H)-dione (C21H16N2O6) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

As a certified reference material (CRM), 6-Ethyl-4-hydroxy-3-(4-nitrobenzyl)-2H-pyrano[3,2-c]quinoline-2,5(6H)-dione 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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