79583-19-0 1-Methyl-1H-pyrazole-4-carbonyl chloride DTXSID70390389 CAS 79583-19-0

Description

Compared with other compounds in its class, the molecular weight of 144.56 g/mol gives 79583-19-0 1-Methyl-1H-pyrazole-4-carbonyl chloride DTXSID70390389 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

79583-19-0 1-Methyl-1H-pyrazole-4-carbonyl chloride DTXSID70390389 (CAS 79583-19-0), molecular formula C5H5ClN2O and molecular weight 144.56 g/mol, is a CATO reference standard with documented purity and traceability.

79583-19-0 1-Methyl-1H-pyrazole-4-carbonyl chloride DTXSID70390389 (C5H5ClN2O) contains an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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

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