2-Hydroxy-5-methylbenzenesulfonic Acid CAS 7134-06-7

Purity 97%+In StockPharmaceutical Standards
CAS No.7134-06-7
Molecular FormulaC7H8O4S
Molecular Weight188.20 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-Hydroxy-5-methylbenzenesulfonic Acid CAS 7134-06-7 chemical structure

Description

The occurrence of 2-Hydroxy-5-methylbenzenesulfonic Acid is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies 2-Hydroxy-5-methylbenzenesulfonic Acid (CAS 7134-06-7), a certified reference material (molecular formula C7H8O4S, MW 188.20 g/mol) for analytical method development and quality control.

Structurally, 2-Hydroxy-5-methylbenzenesulfonic Acid (C7H8O4S) 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 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 188.20 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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

As a certified reference material (CRM), 2-Hydroxy-5-methylbenzenesulfonic Acid 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 FormulaC7H8O4S
Molecular Weight188.20 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)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1959
Sulfur Atoms1

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