2-[1-(3-chloro-4-methylphenyl)-3,5-dimethyl-1h-pyrazol-4-yl]acetic acid CAS 926265-54-5

Purity 97%+In StockPharmaceutical Standards
CAS No.926265-54-5
Molecular FormulaC14H15ClN2O2
Molecular Weight278.73 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-[1-(3-chloro-4-methylphenyl)-3,5-dimethyl-1h-pyrazol-4-yl]acetic acid CAS 926265-54-5 chemical structure

Description

2-[1-(3-chloro-4-methylphenyl)-3,5-dimethyl-1h-pyrazol-4-yl]acetic acid (CAS 926265-54-5) is a high-purity analytical reference standard with the molecular formula C14H15ClN2O2 and a molecular weight of 278.73 g/mol.

The molecular framework of 2-[1-(3-chloro-4-methylphenyl)-3,5-dimethyl-1h-pyrazol-4-yl]acetic acid (C14H15ClN2O2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.

As a certified reference material (CRM), 2-[1-(3-chloro-4-methylphenyl)-3,5-dimethyl-1h-pyrazol-4-yl]acetic 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 FormulaC14H15ClN2O2
Molecular Weight278.73 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation
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; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987
Halogen ContentCl-containing
Nitrogen Atoms2

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