5-Methyl-3-(3-methylthiophen-2-yl)-1,2-oxazole-4-carboxylic acid CAS 1370418-92-0

Description

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.

5-Methyl-3-(3-methylthiophen-2-yl)-1,2-oxazole-4-carboxylic acid (CAS 1370418-92-0) is a high-purity analytical reference standard with the molecular formula C10H9NO3S and a molecular weight of 223.25 g/mol.

5-Methyl-3-(3-methylthiophen-2-yl)-1,2-oxazole-4-carboxylic acid (C10H9NO3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.

Physical & Chemical Properties

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