2-(3-Chlorophenyl)-4-(4-chlorophenyl)-1,2-dihydro-3H-pyrazol-3-one CAS 400075-10-7

Purity 97%+In StockPharmaceutical Standards
CAS No.400075-10-7
Molecular FormulaC15H10Cl2N2O
Molecular Weight305.16 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-(3-Chlorophenyl)-4-(4-chlorophenyl)-1,2-dihydro-3H-pyrazol-3-one CAS 400075-10-7 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 305.16 g/mol gives 2-(3-Chlorophenyl)-4-(4-chlorophenyl)-1,2-dihydro-3H-pyrazol-3-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

2-(3-Chlorophenyl)-4-(4-chlorophenyl)-1,2-dihydro-3H-pyrazol-3-one (CAS 400075-10-7) is a high-purity analytical reference standard with the molecular formula C15H10Cl2N2O and a molecular weight of 305.16 g/mol.

2-(3-Chlorophenyl)-4-(4-chlorophenyl)-1,2-dihydro-3H-pyrazol-3-one (C15H10Cl2N2O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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), 2-(3-Chlorophenyl)-4-(4-chlorophenyl)-1,2-dihydro-3H-pyrazol-3-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 FormulaC15H10Cl2N2O
Molecular Weight305.16 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
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)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Halogen ContentCl-containing
Nitrogen Atoms2

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