4-(4-Methoxybenzylidene)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one CAS 18808-85-0

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-(4-Methoxybenzylidene)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one.

4-(4-Methoxybenzylidene)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one (CAS 18808-85-0), molecular formula C18H16N2O2 and molecular weight 292.33 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, 4-(4-Methoxybenzylidene)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 292.33 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.

CATO manufactures 4-(4-Methoxybenzylidene)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

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