3-(4-Bromophenyl)-5-(4-chlorophenyl)-1-(3,4-dichlorophenyl)-4-(1H-imidazol-1-yl)-4,5-dihydro-1H-pyrazole CAS 496785-20-7

Purity 97%+In StockPharmaceutical Standards
CAS No.496785-20-7
Molecular FormulaC24H16BrCl3N4
Molecular Weight546.67 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-(4-Bromophenyl)-5-(4-chlorophenyl)-1-(3,4-dichlorophenyl)-4-(1H-imidazol-1-yl)-4,5-dihydro-1H-pyrazole CAS 496785-20-7 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 3-(4-Bromophenyl)-5-(4-chlorophenyl)-1-(3,4-dichlorophenyl)-4-(1H-imidazol-1-yl)-4,5-dihydro-1H-pyrazole.

CATO supplies 3-(4-Bromophenyl)-5-(4-chlorophenyl)-1-(3,4-dichlorophenyl)-4-(1H-imidazol-1-yl)-4,5-dihydro-1H-pyrazole (CAS 496785-20-7), a certified reference material (molecular formula C24H16BrCl3N4, MW 546.67 g/mol) for analytical method development and quality control.

3-(4-Bromophenyl)-5-(4-chlorophenyl)-1-(3,4-dichlorophenyl)-4-(1H-imidazol-1-yl)-4,5-dihydro-1H-pyrazole (C24H16BrCl3N4) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine/bromine 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.

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

As a certified reference material (CRM), 3-(4-Bromophenyl)-5-(4-chlorophenyl)-1-(3,4-dichlorophenyl)-4-(1H-imidazol-1-yl)-4,5-dihydro-1H-pyrazole 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 FormulaC24H16BrCl3N4
Molecular Weight546.67 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
Purity97%+
StorageStore at room temperature, 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)17.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Halogen ContentCl/Br-containing
Nitrogen Atoms4

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