5-Chloro-4-oxo-1,4-dihydrocinnoline-3-carboxylic acid CAS 90272-07-4

Description

Compared with other compounds in its class, the molecular weight of 224.60 g/mol gives 5-Chloro-4-oxo-1,4-dihydrocinnoline-3-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

5-Chloro-4-oxo-1,4-dihydrocinnoline-3-carboxylic acid (CAS 90272-07-4) is a high-purity analytical reference standard with the molecular formula C9H5ClN2O3 and a molecular weight of 224.60 g/mol.

The molecular framework of 5-Chloro-4-oxo-1,4-dihydrocinnoline-3-carboxylic acid (C9H5ClN2O3) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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.

CATO manufactures 5-Chloro-4-oxo-1,4-dihydrocinnoline-3-carboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

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