2-Bromo-4-ethyl-1-fluorobenzene CAS 891843-33-7

Purity 97%+In StockPharmaceutical Standards
CAS No.891843-33-7
Molecular FormulaC8H8BrF
Molecular Weight203.05 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-Bromo-4-ethyl-1-fluorobenzene CAS 891843-33-7 chemical structure

Description

2-Bromo-4-ethyl-1-fluorobenzene (CAS 891843-33-7) is a high-purity analytical reference standard with the molecular formula C8H8BrF and a molecular weight of 203.05 g/mol.

Structurally, 2-Bromo-4-ethyl-1-fluorobenzene (C8H8BrF) contains fluorine/bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 203.05 g/mol, it falls into the medium-molecular-weight range. 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.

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 FormulaC8H8BrF
Molecular Weight203.05 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor, low volatility)
Purity97%+
StorageStore at room temperature, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987
Halogen ContentF/Br-containing

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