4-{[(2,4-difluorophenyl)amino]methylidene}-3-phenyl-4,5-dihydro-1H-pyrazol-5-one CAS 338975-68-1

Purity 97%+In StockPharmaceutical Standards
CAS No.338975-68-1
Molecular FormulaC16H11F2N3O
Molecular Weight299.27 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-{[(2,4-difluorophenyl)amino]methylidene}-3-phenyl-4,5-dihydro-1H-pyrazol-5-one CAS 338975-68-1 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-{[(2,4-difluorophenyl)amino]methylidene}-3-phenyl-4,5-dihydro-1H-pyrazol-5-one.

4-{[(2,4-difluorophenyl)amino]methylidene}-3-phenyl-4,5-dihydro-1H-pyrazol-5-one (CAS 338975-68-1) is a high-purity analytical reference standard with the molecular formula C16H11F2N3O and a molecular weight of 299.27 g/mol.

4-{[(2,4-difluorophenyl)amino]methylidene}-3-phenyl-4,5-dihydro-1H-pyrazol-5-one (C16H11F2N3O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 4-{[(2,4-difluorophenyl)amino]methylidene}-3-phenyl-4,5-dihydro-1H-pyrazol-5-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 FormulaC16H11F2N3O
Molecular Weight299.27 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
Purity97%+
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Halogen ContentF-containing
Nitrogen Atoms3

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