5-Methyl-2-phenethyl-2,4-dihydro-pyrazol-3-one CAS 949-26-8

Description

Compared with other compounds in its class, the molecular weight of 202.25 g/mol gives 5-Methyl-2-phenethyl-2,4-dihydro-pyrazol-3-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

5-Methyl-2-phenethyl-2,4-dihydro-pyrazol-3-one (CAS 949-26-8), molecular formula C12H14N2O and molecular weight 202.25 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, 5-Methyl-2-phenethyl-2,4-dihydro-pyrazol-3-one is typically off-white to pale yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 202.25 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.

As a certified reference material (CRM), 5-Methyl-2-phenethyl-2,4-dihydro-pyrazol-3-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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