6-Bromo-7-methoxy-8-methyl-3,4-dihydronaphthalen-1(2H)-one CAS 32260-72-3

Purity 97%+In StockPharmaceutical Standards
CAS No.32260-72-3
Molecular FormulaC12H13BrO2
Molecular Weight269.13 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

6-Bromo-7-methoxy-8-methyl-3,4-dihydronaphthalen-1(2H)-one CAS 32260-72-3 chemical structure

Description

6-Bromo-7-methoxy-8-methyl-3,4-dihydronaphthalen-1(2H)-one (CAS 32260-72-3) is a high-purity analytical reference standard with the molecular formula C12H13BrO2 and a molecular weight of 269.13 g/mol.

6-Bromo-7-methoxy-8-methyl-3,4-dihydronaphthalen-1(2H)-one (C12H13BrO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, 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 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).

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.

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 FormulaC12H13BrO2
Molecular Weight269.13 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1966
Halogen ContentBr-containing

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