7,8-Dimethoxy-2-oxo-1,2-dihydroquinoline-3-carboxylic acid CAS 800412-45-7

Purity 97%+In StockPharmaceutical Standards
CAS No.800412-45-7
Molecular FormulaC12H11NO5
Molecular Weight249.22 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

7,8-Dimethoxy-2-oxo-1,2-dihydroquinoline-3-carboxylic acid CAS 800412-45-7 chemical structure

Description

The occurrence of 7,8-Dimethoxy-2-oxo-1,2-dihydroquinoline-3-carboxylic acid is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

7,8-Dimethoxy-2-oxo-1,2-dihydroquinoline-3-carboxylic acid (CAS 800412-45-7) is a high-purity analytical reference standard with the molecular formula C12H11NO5 and a molecular weight of 249.22 g/mol.

Based on its molecular formula C12H11NO5, 7,8-Dimethoxy-2-oxo-1,2-dihydroquinoline-3-carboxylic acid contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 249.22 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.

As a certified reference material (CRM), 7,8-Dimethoxy-2-oxo-1,2-dihydroquinoline-3-carboxylic acid 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

Molecular FormulaC12H11NO5
Molecular Weight249.22 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1986
Nitrogen Atoms1

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