3-(4-Isobutylphenyl)-1-(p-tolyl)-1H-pyrazole-5-carboxylic acid CAS 618102-90-2

Purity 97%+In StockPharmaceutical Standards
CAS No.618102-90-2
Molecular FormulaC21H22N2O2
Molecular Weight334.41 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-(4-Isobutylphenyl)-1-(p-tolyl)-1H-pyrazole-5-carboxylic acid CAS 618102-90-2 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-(4-Isobutylphenyl)-1-(p-tolyl)-1H-pyrazole-5-carboxylic acid.

CATO supplies 3-(4-Isobutylphenyl)-1-(p-tolyl)-1H-pyrazole-5-carboxylic acid (CAS 618102-90-2), a certified reference material (molecular formula C21H22N2O2, MW 334.41 g/mol) for analytical method development and quality control.

Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, 3-(4-Isobutylphenyl)-1-(p-tolyl)-1H-pyrazole-5-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 334.41 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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-Isobutylphenyl)-1-(p-tolyl)-1H-pyrazole-5-carboxylic acid 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 FormulaC21H22N2O2
Molecular Weight334.41 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.)1985
Nitrogen Atoms2

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