m-Toluenesulfonic acid hydrate CAS 342385-54-0

Purity 97%+In StockPharmaceutical Standards
CAS No.342385-54-0
Molecular FormulaC7H8O3S
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

m-Toluenesulfonic acid hydrate CAS 342385-54-0 chemical structure

Description

Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, m-Toluenesulfonic acid hydrate is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 190.21 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

m-Toluenesulfonic acid hydrate (CAS 342385-54-0), molecular formula C7H8O3SH2O and molecular weight 190.21 g/mol, is a CATO reference standard with documented purity and traceability.

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.

As a certified reference material (CRM), m-Toluenesulfonic acid hydrate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC7H8O3S H2O
Molecular Weight190.21 g/mol
Purity97%+
StorageStore at 2-8°C, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)2025
Sulfur Atoms1

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