3-(4-Methoxyphenyl)-1-(4-nitrophenyl)-1H-pyrazol-5-ol CAS 428839-06-9

Purity 97%+In StockPharmaceutical Standards
CAS No.428839-06-9
Molecular FormulaC16H13N3O4
Molecular Weight311.29 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-(4-Methoxyphenyl)-1-(4-nitrophenyl)-1H-pyrazol-5-ol CAS 428839-06-9 chemical structure

Description

The occurrence of 3-(4-Methoxyphenyl)-1-(4-nitrophenyl)-1H-pyrazol-5-ol is closely related to a flavonoid core, 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-Methoxyphenyl)-1-(4-nitrophenyl)-1H-pyrazol-5-ol (CAS 428839-06-9), a certified reference material (molecular formula C16H13N3O4, MW 311.29 g/mol) for analytical method development and quality control.

Based on its molecular formula C16H13N3O4, 3-(4-Methoxyphenyl)-1-(4-nitrophenyl)-1H-pyrazol-5-ol contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 311.29 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.

CATO manufactures 3-(4-Methoxyphenyl)-1-(4-nitrophenyl)-1H-pyrazol-5-ol 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

Molecular FormulaC16H13N3O4
Molecular Weight311.29 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)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Nitrogen Atoms3

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