5-Ethoxy-2-(4-nitrophenyl)-2,4-dihydro-3H-pyrazol-3-one CAS 4105-90-2

Description

Compared with other compounds in its class, the molecular weight of 249.22 g/mol gives 5-Ethoxy-2-(4-nitrophenyl)-2,4-dihydro-3H-pyrazol-3-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies 5-Ethoxy-2-(4-nitrophenyl)-2,4-dihydro-3H-pyrazol-3-one (CAS 4105-90-2), a certified reference material (molecular formula C11H11N3O4, MW 249.22 g/mol) for analytical method development and quality control.

Structurally, 5-Ethoxy-2-(4-nitrophenyl)-2,4-dihydro-3H-pyrazol-3-one (C11H11N3O4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 249.22 g/mol, it falls into the medium-molecular-weight range. 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), 5-Ethoxy-2-(4-nitrophenyl)-2,4-dihydro-3H-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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