3-ethyl-1-methyl-4,5-dihydro-1H-pyrazol-5-one CAS 31272-03-4

Description

Compared with other compounds in its class, the molecular weight of 126.16 g/mol gives 3-ethyl-1-methyl-4,5-dihydro-1H-pyrazol-5-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

3-ethyl-1-methyl-4,5-dihydro-1H-pyrazol-5-one (CAS 31272-03-4), molecular formula C6H10N2O and molecular weight 126.16 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C6H10N2O, 3-ethyl-1-methyl-4,5-dihydro-1H-pyrazol-5-one contains an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 126.16 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.

As a certified reference material (CRM), 3-ethyl-1-methyl-4,5-dihydro-1H-pyrazol-5-one 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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