5-(4-Chloro-phenyl)-2-ethyl-2H-pyrazole-3-carboxylic acid CAS 1015868-72-0

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5-(4-Chloro-phenyl)-2-ethyl-2H-pyrazole-3-carboxylic acid.

5-(4-Chloro-phenyl)-2-ethyl-2H-pyrazole-3-carboxylic acid (CAS 1015868-72-0), molecular formula C12H11ClN2O2 and molecular weight 250.68 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C12H11ClN2O2, 5-(4-Chloro-phenyl)-2-ethyl-2H-pyrazole-3-carboxylic acid contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 250.68 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.

CATO manufactures 5-(4-Chloro-phenyl)-2-ethyl-2H-pyrazole-3-carboxylic acid 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

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