1-(4-Chlorophenyl)-3-(4-fluorophenyl)-1H-pyrazol-5-amine CAS 72411-55-3

Description

Compared with other compounds in its class, the molecular weight of 287.72 g/mol gives 1-(4-Chlorophenyl)-3-(4-fluorophenyl)-1H-pyrazol-5-amine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

1-(4-Chlorophenyl)-3-(4-fluorophenyl)-1H-pyrazol-5-amine (CAS 72411-55-3) is a high-purity analytical reference standard with the molecular formula C15H11ClFN3 and a molecular weight of 287.72 g/mol.

Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, fluorine/chlorine substitution, 1-(4-Chlorophenyl)-3-(4-fluorophenyl)-1H-pyrazol-5-amine is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 287.72 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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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