9-Methoxy-12H-benzo[a]xanthen-12-one CAS 16348-77-9

Purity 97%+In StockPharmaceutical Standards
CAS No.16348-77-9
Molecular FormulaC18H12O3
Molecular Weight276.29 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

9-Methoxy-12H-benzo[a]xanthen-12-one CAS 16348-77-9 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 276.29 g/mol gives 9-Methoxy-12H-benzo[a]xanthen-12-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

9-Methoxy-12H-benzo[a]xanthen-12-one (CAS 16348-77-9) is a high-purity analytical reference standard with the molecular formula C18H12O3 and a molecular weight of 276.29 g/mol.

9-Methoxy-12H-benzo[a]xanthen-12-one (C18H12O3) contains a steroid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, 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).

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 9-Methoxy-12H-benzo[a]xanthen-12-one 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

Molecular FormulaC18H12O3
Molecular Weight276.29 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 chloroform, dichloromethane, ethyl acetate, DMSO
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.)1961

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