7-methoxy-3-methyl-2H-1,2,4-benzothidiazine 1, 1-dioxide CAS 6451-51-0

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.

CATO supplies 7-methoxy-3-methyl-2H-1,2,4-benzothidiazine 1, 1-dioxide (CAS 6451-51-0), a certified reference material (molecular formula C9H10N2O3S, MW 226.25 g/mol) for analytical method development and quality control.

7-methoxy-3-methyl-2H-1,2,4-benzothidiazine 1, 1-dioxide (C9H10N2O3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, 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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