9,10-Dioxo-9,10-dihydroanthracene-2,7-dicarboxylic acid CAS 42946-22-5

Purity 97%+In StockPharmaceutical Standards
CAS No.42946-22-5
Molecular FormulaC16H8O6
Molecular Weight296.23 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

9,10-Dioxo-9,10-dihydroanthracene-2,7-dicarboxylic acid CAS 42946-22-5 chemical structure

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.

9,10-Dioxo-9,10-dihydroanthracene-2,7-dicarboxylic acid (CAS 42946-22-5), molecular formula C16H8O6 and molecular weight 296.23 g/mol, is a CATO reference standard with documented purity and traceability.

9,10-Dioxo-9,10-dihydroanthracene-2,7-dicarboxylic acid (C16H8O6) contains a flavonoid core, a hydroxyl group, an ether linkage. 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).

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

Molecular FormulaC16H8O6
Molecular Weight296.23 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
Degree of Unsaturation (DBE)13.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1969

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