18499-92-8 2A580G9V9I Kermesic acid UNII-2A580G9V9I Kermesic acid [MI] 2-Anthracenecarboxylic acid, 9,10-dihydro-3,5,6,8-tetrahydroxy-1-methyl-9,10-dioxo- 1-Methyl-2-carboxy-3,5,6,8-tetrahydroxyanthraquinone C.i. natural Red 3 C.I. 75460 CAS 18499-92-8

Purity 97%+In StockPharmaceutical Standards
CAS No.18499-92-8
Molecular FormulaC16H10O8
Molecular Weight330.25 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

18499-92-8 2A580G9V9I Kermesic acid UNII-2A580G9V9I Kermesic acid [MI] 2-Anthracenecarboxylic acid, 9,10-dihydro-3,5,6,8-tetrahydroxy-1-methyl-9,10-dioxo- 1-Methyl-2-carboxy-3,5,6,8-tetrahydroxyanthraquinone C.i. natural Red 3 C.I. 75460 CAS 18499-92-8 chemical structure

Description

Based on its molecular formula C16H10O8, 18499-92-8 2A580G9V9I Kermesic acid UNII-2A580G9V9I Kermesic acid [MI] 2-Anthracenecarboxylic acid, 9,10-dihydro-3,5,6,8-tetrahydroxy-1-methyl-9,10-dioxo- 1-Methyl-2-carboxy-3,5,6,8-tetrahydroxyanthraquinone C.i. natural Red 3 C.I. 75460 contains a flavonoid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 330.25 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

18499-92-8 2A580G9V9I Kermesic acid UNII-2A580G9V9I Kermesic acid [MI] 2-Anthracenecarboxylic acid, 9,10-dihydro-3,5,6,8-tetrahydroxy-1-methyl-9,10-dioxo- 1-Methyl-2-carboxy-3,5,6,8-tetrahydroxyanthraquinone C.i. natural Red 3 C.I. 75460 (CAS 18499-92-8) is a high-purity analytical reference standard with the molecular formula C16H10O8 and a molecular weight of 330.25 g/mol.

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), 18499-92-8 2A580G9V9I Kermesic acid UNII-2A580G9V9I Kermesic acid [MI] 2-Anthracenecarboxylic acid, 9,10-dihydro-3,5,6,8-tetrahydroxy-1-methyl-9,10-dioxo- 1-Methyl-2-carboxy-3,5,6,8-tetrahydroxyanthraquinone C.i. natural Red 3 C.I. 75460 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 FormulaC16H10O8
Molecular Weight330.25 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)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1962

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