1-(3,4-Difluoro-1H-pyrazol-1-yl)ethanone CAS 73305-85-8

Description

The occurrence of 1-(3,4-Difluoro-1H-pyrazol-1-yl)ethanone is closely related to an amide group, a hydroxyl group, an ether linkage, fluorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

1-(3,4-Difluoro-1H-pyrazol-1-yl)ethanone (CAS 73305-85-8), molecular formula C5H4F2N2O and molecular weight 146.09 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to an amide group, a hydroxyl group, an ether linkage, fluorine substitution, 1-(3,4-Difluoro-1H-pyrazol-1-yl)ethanone is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 146.09 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.

As a certified reference material (CRM), 1-(3,4-Difluoro-1H-pyrazol-1-yl)ethanone meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

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