4-bromo-3-fluoro-1-methyl-1H-pyrazole CAS 1785074-93-2

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-bromo-3-fluoro-1-methyl-1H-pyrazole.

4-bromo-3-fluoro-1-methyl-1H-pyrazole (CAS 1785074-93-2) is a high-purity analytical reference standard with the molecular formula C4H8BrFN2 and a molecular weight of 183.02 g/mol.

4-bromo-3-fluoro-1-methyl-1H-pyrazole (C4H8BrFN2) contains fluorine/bromine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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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