7-Bromo-3-methyl-1,2-benzisoxazole CAS 66033-75-8

Purity 97%+In StockPharmaceutical Standards
CAS No.66033-75-8
Molecular FormulaC8H6BrNO
Molecular Weight212.04 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

7-Bromo-3-methyl-1,2-benzisoxazole CAS 66033-75-8 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 212.04 g/mol gives 7-Bromo-3-methyl-1,2-benzisoxazole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

7-Bromo-3-methyl-1,2-benzisoxazole (CAS 66033-75-8) is a high-purity analytical reference standard with the molecular formula C8H6BrNO and a molecular weight of 212.04 g/mol.

7-Bromo-3-methyl-1,2-benzisoxazole (C8H6BrNO) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. Halogen substitution raises its density and boiling point; 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 FormulaC8H6BrNO
Molecular Weight212.04 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
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)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1975
Halogen ContentBr-containing
Nitrogen Atoms1

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