2-(2,4-Dichlorobenzoyl)-3-phenylisoxazol-5(2H)-one CAS 303987-06-6

Purity 97%+In StockPharmaceutical Standards
CAS No.303987-06-6
Molecular FormulaC16H9Cl2NO3
Molecular Weight334.15 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-(2,4-Dichlorobenzoyl)-3-phenylisoxazol-5(2H)-one CAS 303987-06-6 chemical structure

Description

As a certified reference material (CRM), 2-(2,4-Dichlorobenzoyl)-3-phenylisoxazol-5(2H)-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.

2-(2,4-Dichlorobenzoyl)-3-phenylisoxazol-5(2H)-one (CAS 303987-06-6) is a high-purity analytical reference standard with the molecular formula C16H9Cl2NO3 and a molecular weight of 334.15 g/mol.

Structurally, 2-(2,4-Dichlorobenzoyl)-3-phenylisoxazol-5(2H)-one (C16H9Cl2NO3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 334.15 g/mol, it falls into the moderately-high-molecular-weight range. 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.

Physical & Chemical Properties

Molecular FormulaC16H9Cl2NO3
Molecular Weight334.15 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
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)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Halogen ContentCl-containing
Nitrogen Atoms1

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