3-(4-Nitrobenzamido)-1-phenyl-1H-pyrazol-5-yl benzoate CAS 476479-81-9

Purity 97%+In StockPharmaceutical Standards
CAS No.476479-81-9
Molecular FormulaC23H16N4O5
Molecular Weight428.40 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-(4-Nitrobenzamido)-1-phenyl-1H-pyrazol-5-yl benzoate CAS 476479-81-9 chemical structure

Description

The occurrence of 3-(4-Nitrobenzamido)-1-phenyl-1H-pyrazol-5-yl benzoate 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-Nitrobenzamido)-1-phenyl-1H-pyrazol-5-yl benzoate (CAS 476479-81-9), a certified reference material (molecular formula C23H16N4O5, MW 428.40 g/mol) for analytical method development and quality control.

3-(4-Nitrobenzamido)-1-phenyl-1H-pyrazol-5-yl benzoate (C23H16N4O5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC23H16N4O5
Molecular Weight428.40 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore in a cool place (≤25°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)18.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Nitrogen Atoms4

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