3-[1-(4-Chlorophenyl)-1H-pyrazol-3-yl]-1-phenyl-1,4-dihydropyridazin-4-one CAS 318497-94-8

Purity 97%+In StockPharmaceutical Standards
CAS No.318497-94-8
Molecular FormulaC19H13ClN4O
Molecular Weight348.79 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-[1-(4-Chlorophenyl)-1H-pyrazol-3-yl]-1-phenyl-1,4-dihydropyridazin-4-one CAS 318497-94-8 chemical structure

Description

The occurrence of 3-[1-(4-Chlorophenyl)-1H-pyrazol-3-yl]-1-phenyl-1,4-dihydropyridazin-4-one 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.

3-[1-(4-Chlorophenyl)-1H-pyrazol-3-yl]-1-phenyl-1,4-dihydropyridazin-4-one (CAS 318497-94-8) is a high-purity analytical reference standard with the molecular formula C19H13ClN4O and a molecular weight of 348.79 g/mol.

Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 3-[1-(4-Chlorophenyl)-1H-pyrazol-3-yl]-1-phenyl-1,4-dihydropyridazin-4-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 348.79 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.

CATO manufactures 3-[1-(4-Chlorophenyl)-1H-pyrazol-3-yl]-1-phenyl-1,4-dihydropyridazin-4-one 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

Molecular FormulaC19H13ClN4O
Molecular Weight348.79 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)15.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Halogen ContentCl-containing
Nitrogen Atoms4

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