1-methyl-1H-pyrazole-4-sulfonic acid CAS 1798770-47-4

Purity 97%+In StockPharmaceutical Standards
CAS No.1798770-47-4
Molecular FormulaC4H6N2O3S
Molecular Weight162.17 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-methyl-1H-pyrazole-4-sulfonic acid CAS 1798770-47-4 chemical structure

Description

1-methyl-1H-pyrazole-4-sulfonic acid (C4H6N2O3S) contains an amide group, a sulfone group, a carboxylic acid 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

CATO supplies 1-methyl-1H-pyrazole-4-sulfonic acid (CAS 1798770-47-4), a certified reference material (molecular formula C4H6N2O3S, MW 162.17 g/mol) for analytical method development and quality control.

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

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

Molecular FormulaC4H6N2O3S
Molecular Weight162.17 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1994
Nitrogen Atoms2
Sulfur Atoms1

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