2-Methyl-5-phenyl-4-(prop-2-yn-1-yl)isoxazol-3(2H)-one CAS 203917-60-6

Description

The occurrence of 2-Methyl-5-phenyl-4-(prop-2-yn-1-yl)isoxazol-3(2H)-one is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

2-Methyl-5-phenyl-4-(prop-2-yn-1-yl)isoxazol-3(2H)-one (CAS 203917-60-6), molecular formula C13H11NO2 and molecular weight 213.23 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 2-Methyl-5-phenyl-4-(prop-2-yn-1-yl)isoxazol-3(2H)-one (C13H11NO2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

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