2-(4-Chlorophenyl)pyrazolidin-3-one CAS 90061-89-5

Purity 97%+In StockPharmaceutical Standards
CAS No.90061-89-5
Molecular FormulaC9H9ClN2O
Molecular Weight196.63 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-(4-Chlorophenyl)pyrazolidin-3-one CAS 90061-89-5 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 196.63 g/mol gives 2-(4-Chlorophenyl)pyrazolidin-3-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies 2-(4-Chlorophenyl)pyrazolidin-3-one (CAS 90061-89-5), a certified reference material (molecular formula C9H9ClN2O, MW 196.63 g/mol) for analytical method development and quality control.

Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 2-(4-Chlorophenyl)pyrazolidin-3-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 196.63 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.

As a certified reference material (CRM), 2-(4-Chlorophenyl)pyrazolidin-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 FormulaC9H9ClN2O
Molecular Weight196.63 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-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)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1982
Halogen ContentCl-containing
Nitrogen Atoms2

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