1-(Difluoromethyl)-4-ethynyl-1H-pyrazole CAS 1400287-71-9

Description

The occurrence of 1-(Difluoromethyl)-4-ethynyl-1H-pyrazole is closely related to a nitrile group, fluorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

1-(Difluoromethyl)-4-ethynyl-1H-pyrazole (CAS 1400287-71-9) is a high-purity analytical reference standard with the molecular formula C6H4F2N2 and a molecular weight of 142.11 g/mol.

Based on its molecular formula C6H4F2N2, 1-(Difluoromethyl)-4-ethynyl-1H-pyrazole contains a nitrile group, fluorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 142.11 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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-(Difluoromethyl)-4-ethynyl-1H-pyrazole 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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