4-Bromo-1-(4-bromo-3-methylphenyl)-3,5-dimethyl-1H-pyrazole CAS 2379321-20-5

Description

The occurrence of 4-Bromo-1-(4-bromo-3-methylphenyl)-3,5-dimethyl-1H-pyrazole is closely related to a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

4-Bromo-1-(4-bromo-3-methylphenyl)-3,5-dimethyl-1H-pyrazole (CAS 2379321-20-5) is a high-purity analytical reference standard with the molecular formula C12H12Br2N2 and a molecular weight of 344.05 g/mol.

Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution, 4-Bromo-1-(4-bromo-3-methylphenyl)-3,5-dimethyl-1H-pyrazole is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 344.05 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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

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