Methyl (E)-5-chloro-4-((((2,6-dichlorobenzyl)oxy)imino)methyl)-1-phenyl-1H-pyrazole-3-carboxylate CAS 320423-30-1

Purity 97%+In StockPharmaceutical Standards
CAS No.320423-30-1
Molecular FormulaC19H14Cl3N3O3
Molecular Weight438.69 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Methyl (E)-5-chloro-4-((((2,6-dichlorobenzyl)oxy)imino)methyl)-1-phenyl-1H-pyrazole-3-carboxylate CAS 320423-30-1 chemical structure

Description

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.

CATO supplies Methyl (E)-5-chloro-4-((((2,6-dichlorobenzyl)oxy)imino)methyl)-1-phenyl-1H-pyrazole-3-carboxylate (CAS 320423-30-1), a certified reference material (molecular formula C19H14Cl3N3O3, MW 438.69 g/mol) for analytical method development and quality control.

The molecular framework of Methyl (E)-5-chloro-4-((((2,6-dichlorobenzyl)oxy)imino)methyl)-1-phenyl-1H-pyrazole-3-carboxylate (C19H14Cl3N3O3) 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 the protonation state of its nitrogen-containing groups, 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.

Physical & Chemical Properties

Molecular FormulaC19H14Cl3N3O3
Molecular Weight438.69 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
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; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)13.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Halogen ContentCl-containing
Nitrogen Atoms3

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