5-Chloro-1,3-diphenyl-1H-pyrazole-4-carbaldehyde CAS 5499-67-2

Purity 97%+In StockPharmaceutical Standards
CAS No.5499-67-2
Molecular FormulaC16H11ClN2O
Molecular Weight282.72 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Chloro-1,3-diphenyl-1H-pyrazole-4-carbaldehyde CAS 5499-67-2 chemical structure

Description

The occurrence of 5-Chloro-1,3-diphenyl-1H-pyrazole-4-carbaldehyde is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies 5-Chloro-1,3-diphenyl-1H-pyrazole-4-carbaldehyde (CAS 5499-67-2), a certified reference material (molecular formula C16H11ClN2O, MW 282.72 g/mol) for analytical method development and quality control.

Based on its molecular formula C16H11ClN2O, 5-Chloro-1,3-diphenyl-1H-pyrazole-4-carbaldehyde contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 282.72 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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), 5-Chloro-1,3-diphenyl-1H-pyrazole-4-carbaldehyde 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 FormulaC16H11ClN2O
Molecular Weight282.72 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor)
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.)1958
Halogen ContentCl-containing
Nitrogen Atoms2

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