3-(4-Hydroxyphenyl)-1-phenyl-1H-pyrazol-5(4H)-one CAS 1243328-63-3

Purity 97%+In StockPharmaceutical Standards
CAS No.1243328-63-3
Molecular FormulaC15H12N2O2
Molecular Weight252.27 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-(4-Hydroxyphenyl)-1-phenyl-1H-pyrazol-5(4H)-one CAS 1243328-63-3 chemical structure

Description

The occurrence of 3-(4-Hydroxyphenyl)-1-phenyl-1H-pyrazol-5(4H)-one is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies 3-(4-Hydroxyphenyl)-1-phenyl-1H-pyrazol-5(4H)-one (CAS 1243328-63-3), a certified reference material (molecular formula C15H12N2O2, MW 252.27 g/mol) for analytical method development and quality control.

Based on its molecular formula C15H12N2O2, 3-(4-Hydroxyphenyl)-1-phenyl-1H-pyrazol-5(4H)-one contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 252.27 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), 3-(4-Hydroxyphenyl)-1-phenyl-1H-pyrazol-5(4H)-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

Molecular FormulaC15H12N2O2
Molecular Weight252.27 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1990
Nitrogen Atoms2

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