3-(4-Chlorophenyl)isoxazol-5(4H)-one CAS 25755-85-5

Purity 97%+In StockPharmaceutical Standards
CAS No.25755-85-5
Molecular FormulaC9H6ClNO2
Molecular Weight195.60 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-(4-Chlorophenyl)isoxazol-5(4H)-one CAS 25755-85-5 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-Chlorophenyl)isoxazol-5(4H)-one.

CATO supplies 3-(4-Chlorophenyl)isoxazol-5(4H)-one (CAS 25755-85-5), a certified reference material (molecular formula C9H6ClNO2, MW 195.60 g/mol) for analytical method development and quality control.

Based on its molecular formula C9H6ClNO2, 3-(4-Chlorophenyl)isoxazol-5(4H)-one 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 195.60 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), 3-(4-Chlorophenyl)isoxazol-5(4H)-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 FormulaC9H6ClNO2
Molecular Weight195.60 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 methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1964
Halogen ContentCl-containing
Nitrogen Atoms1

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