1-(2-Ethylphenyl)-5-phenyl-4,5-dihydro-1h-pyrazole-3-carboxylic acid CAS 1264050-18-1

Description

Compared with other compounds in its class, the molecular weight of 294.35 g/mol gives 1-(2-Ethylphenyl)-5-phenyl-4,5-dihydro-1h-pyrazole-3-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

1-(2-Ethylphenyl)-5-phenyl-4,5-dihydro-1h-pyrazole-3-carboxylic acid (CAS 1264050-18-1), molecular formula C18H18N2O2 and molecular weight 294.35 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 1-(2-Ethylphenyl)-5-phenyl-4,5-dihydro-1h-pyrazole-3-carboxylic acid (C18H18N2O2) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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-(2-Ethylphenyl)-5-phenyl-4,5-dihydro-1h-pyrazole-3-carboxylic acid 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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