2-Chloro-n-[3-(4-ethylphenyl)-1-phenyl-1h-pyrazol-5-yl]acetamide CAS 956453-59-1

Description

The occurrence of 2-Chloro-n-[3-(4-ethylphenyl)-1-phenyl-1h-pyrazol-5-yl]acetamide is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

2-Chloro-n-[3-(4-ethylphenyl)-1-phenyl-1h-pyrazol-5-yl]acetamide (CAS 956453-59-1), molecular formula C19H18ClN3O and molecular weight 339.82 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 2-Chloro-n-[3-(4-ethylphenyl)-1-phenyl-1h-pyrazol-5-yl]acetamide (C19H18ClN3O) is characterized by a steroid core, 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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

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