1-(4-Bromophenyl)-5-phenyl-1H-pyrazole CAS 299162-81-5

Purity 97%+In StockPharmaceutical Standards
CAS No.299162-81-5
Molecular FormulaC15H11BrN2
Molecular Weight299.17 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-(4-Bromophenyl)-5-phenyl-1H-pyrazole CAS 299162-81-5 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1-(4-Bromophenyl)-5-phenyl-1H-pyrazole.

CATO supplies 1-(4-Bromophenyl)-5-phenyl-1H-pyrazole (CAS 299162-81-5), a certified reference material (molecular formula C15H11BrN2, MW 299.17 g/mol) for analytical method development and quality control.

The molecular framework of 1-(4-Bromophenyl)-5-phenyl-1H-pyrazole (C15H11BrN2) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, 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.

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 FormulaC15H11BrN2
Molecular Weight299.17 g/mol
AppearancePale yellow to 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 DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Halogen ContentBr-containing
Nitrogen Atoms2

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