1-{1-(3,4-Difluorophenyl)-4-[4-(ethoxycarbonyl)anilino]-2,5-dioxo-2,5-dihydro-1H-pyrrol-3-yl}pyridinium chloride CAS 281223-59-4

Purity 97%+In StockPharmaceutical Standards
CAS No.281223-59-4
Molecular FormulaC24H18F2N3O4
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-{1-(3,4-Difluorophenyl)-4-[4-(ethoxycarbonyl)anilino]-2,5-dioxo-2,5-dihydro-1H-pyrrol-3-yl}pyridinium chloride CAS 281223-59-4 chemical structure

Description

Structurally, 1-{1-(3,4-Difluorophenyl)-4-[4-(ethoxycarbonyl)anilino]-2,5-dioxo-2,5-dihydro-1H-pyrrol-3-yl}pyridinium chloride (C24H18F2N3O4Cl) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 16.0, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 485.87 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

CATO supplies 1-{1-(3,4-Difluorophenyl)-4-[4-(ethoxycarbonyl)anilino]-2,5-dioxo-2,5-dihydro-1H-pyrrol-3-yl}pyridinium chloride (CAS 281223-59-4), a certified reference material (molecular formula C24H18F2N3O4Cl, MW 485.87 g/mol) for analytical method development and quality control.

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), 1-{1-(3,4-Difluorophenyl)-4-[4-(ethoxycarbonyl)anilino]-2,5-dioxo-2,5-dihydro-1H-pyrrol-3-yl}pyridinium chloride 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 FormulaC24H18F2N3O4 Cl
Molecular Weight485.87 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)16.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Halogen ContentF/Cl-containing
Nitrogen Atoms3

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