3-(4-Bromophenyl)-5-(4-chlorophenyl)-1-phenyl-4,5-dihydro-1H-pyrazole CAS 122652-40-8

Purity 97%+In StockPharmaceutical Standards
CAS No.122652-40-8
Molecular FormulaC21H16BrClN2
Molecular Weight411.72 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-(4-Bromophenyl)-5-(4-chlorophenyl)-1-phenyl-4,5-dihydro-1H-pyrazole CAS 122652-40-8 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 411.72 g/mol gives 3-(4-Bromophenyl)-5-(4-chlorophenyl)-1-phenyl-4,5-dihydro-1H-pyrazole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies 3-(4-Bromophenyl)-5-(4-chlorophenyl)-1-phenyl-4,5-dihydro-1H-pyrazole (CAS 122652-40-8), a certified reference material (molecular formula C21H16BrClN2, MW 411.72 g/mol) for analytical method development and quality control.

The molecular framework of 3-(4-Bromophenyl)-5-(4-chlorophenyl)-1-phenyl-4,5-dihydro-1H-pyrazole (C21H16BrClN2) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine/bromine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.

As a certified reference material (CRM), 3-(4-Bromophenyl)-5-(4-chlorophenyl)-1-phenyl-4,5-dihydro-1H-pyrazole 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 FormulaC21H16BrClN2
Molecular Weight411.72 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
Purity97%+
StorageStore at room temperature, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)14.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1992
Halogen ContentCl/Br-containing
Nitrogen Atoms2

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