4-Methyl-3-sulfobenzoic acid CAS 62454-72-2

Purity 97%+In StockPharmaceutical Standards
CAS No.62454-72-2
Molecular FormulaC8H8O5S
Molecular Weight216.21 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-Methyl-3-sulfobenzoic acid CAS 62454-72-2 chemical structure

Description

CATO supplies 4-Methyl-3-sulfobenzoic acid (CAS 62454-72-2), a certified reference material (molecular formula C8H8O5S, MW 216.21 g/mol) for analytical method development and quality control.

Structurally, 4-Methyl-3-sulfobenzoic acid (C8H8O5S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 216.21 g/mol, it falls into the medium-molecular-weight range. 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.

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 FormulaC8H8O5S
Molecular Weight216.21 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1974
Sulfur Atoms1

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