4-{[(2,4-difluorophenyl)amino]methylidene}-4,5-dihydro-1H-pyrazol-5-one CAS 339020-71-2

Purity 97%+In StockPharmaceutical Standards
CAS No.339020-71-2
Molecular FormulaC10H7F2N3O
Molecular Weight223.18 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-{[(2,4-difluorophenyl)amino]methylidene}-4,5-dihydro-1H-pyrazol-5-one CAS 339020-71-2 chemical structure

Description

The occurrence of 4-{[(2,4-difluorophenyl)amino]methylidene}-4,5-dihydro-1H-pyrazol-5-one is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

4-{[(2,4-difluorophenyl)amino]methylidene}-4,5-dihydro-1H-pyrazol-5-one (CAS 339020-71-2) is a high-purity analytical reference standard with the molecular formula C10H7F2N3O and a molecular weight of 223.18 g/mol.

4-{[(2,4-difluorophenyl)amino]methylidene}-4,5-dihydro-1H-pyrazol-5-one (C10H7F2N3O) 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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), 4-{[(2,4-difluorophenyl)amino]methylidene}-4,5-dihydro-1H-pyrazol-5-one 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 FormulaC10H7F2N3O
Molecular Weight223.18 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-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)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Halogen ContentF-containing
Nitrogen Atoms3

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