(4Z)-3-Methyl-4-{[(4-methylphenyl)amino]methylidene}-1-phenyl-4,5-dihydro-1H-pyrazol-5-one CAS 57134-90-4

Description

Compared with other compounds in its class, the molecular weight of 291.35 g/mol gives (4Z)-3-Methyl-4-{[(4-methylphenyl)amino]methylidene}-1-phenyl-4,5-dihydro-1H-pyrazol-5-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

(4Z)-3-Methyl-4-{[(4-methylphenyl)amino]methylidene}-1-phenyl-4,5-dihydro-1H-pyrazol-5-one (CAS 57134-90-4), molecular formula C18H17N3O and molecular weight 291.35 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of (4Z)-3-Methyl-4-{[(4-methylphenyl)amino]methylidene}-1-phenyl-4,5-dihydro-1H-pyrazol-5-one (C18H17N3O) 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).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

As a certified reference material (CRM), (4Z)-3-Methyl-4-{[(4-methylphenyl)amino]methylidene}-1-phenyl-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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