1,3-Dimethyl-5-(methylsulfonyl)-1H-pyrazolo[4,3-e][1,2,4]triazine CAS 871253-78-0

Description

Compared with other compounds in its class, the molecular weight of 227.24 g/mol gives 1,3-Dimethyl-5-(methylsulfonyl)-1H-pyrazolo[4,3-e][1,2,4]triazine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

1,3-Dimethyl-5-(methylsulfonyl)-1H-pyrazolo[4,3-e][1,2,4]triazine (CAS 871253-78-0), molecular formula C7H9N5O2S and molecular weight 227.24 g/mol, is a CATO reference standard with documented purity and traceability.

1,3-Dimethyl-5-(methylsulfonyl)-1H-pyrazolo[4,3-e][1,2,4]triazine (C7H9N5O2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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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