4-Hydroxy-2-methylbenzenesulfonic Acid

Name: 4-Hydroxy-2-methylbenzenesulfonic Acid
Brand: Vaqora Chemicals
SKU: VQ-041546

About 4-Hydroxy-2-methylbenzenesulfonic Acid

4-Hydroxy-2-methylbenzenesulfonic Acid (CAS 7134-05-6) is a metabolite or degradation product of Policresulen offered by Vaqora Chemicals. Formula C7H8O4S, molecular weight 188.2 g/mol. It is also known as o-Toluenesulfonic acid, 4-hydroxy- or Benzenesulfonic acid, 4-hydroxy-2-methyl-.

It is supplied as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Good laboratory practice and suitable PPE are recommended during handling.

Analytical teams use this compound to identify metabolites and degradants of Policresulen, to validate stability-indicating methods (AMV) and to support QC and regulatory filings. It is used across pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Metabolite identification
Stability-indicating methods
Impurity profiling
Fine chemical synthesis

Industries

Related to Policresulen

View every impurity, metabolite and intermediate we list for Policresulen.

Policresulen impurities

Specifications & identifiers

Chemical identifiers
Product name	4-Hydroxy-2-methylbenzenesulfonic Acid
Catalogue No.	VQ-041546
CAS Number	7134-05-6
IUPAC name	4-hydroxy-2-methylbenzenesulfonic acid
Molecular formula	C₇H₈O₄S
Molecular weight	188.2 g/mol
Exact mass	188.0143
Grade	Reference Standard
HSN code	38229090
InChIKey	PYPXOMYXFFYJIF-UHFFFAOYSA-N
SMILES	CC1=C(C=CC(=C1)O)S(=O)(=O)O
PubChem CID	81554

Physical properties
Physical form	Solid
LogP (XLogP3)	0.7
H-bond donors / acceptors	2 / 4
TPSA	83 Å²
Synonyms	o-Toluenesulfonic acid, 4-hydroxy-, Benzenesulfonic acid, 4-hydroxy-2-methyl-, 4-Hydroxy-2-methylbenzenesulfonic Acid Hydrate, 4-hydroxy-2-methylbenzene-1-sulfonic acid, 5-Hydroxytoluene-2-sulphonic acid, 2-methyl-4-hydroxy benzenesulphonic acid

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of 4-Hydroxy-2-methylbenzenesulfonic Acid?

The CAS Registry Number of 4-Hydroxy-2-methylbenzenesulfonic Acid is 7134-05-6. It is also known as o-Toluenesulfonic acid, 4-hydroxy-, Benzenesulfonic acid, 4-hydroxy-2-methyl-, 4-Hydroxy-2-methylbenzenesulfonic Acid Hydrate.

What is the molecular formula and molecular weight of 4-Hydroxy-2-methylbenzenesulfonic Acid?

4-Hydroxy-2-methylbenzenesulfonic Acid has the molecular formula C7H8O4S and a molecular weight of 188.2 g/mol. Its IUPAC name is 4-hydroxy-2-methylbenzenesulfonic acid.

What is 4-Hydroxy-2-methylbenzenesulfonic Acid used for?

4-Hydroxy-2-methylbenzenesulfonic Acid is supplied as a characterised reference material related to Policresulen. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of 4-Hydroxy-2-methylbenzenesulfonic Acid can I order?

We supply 4-Hydroxy-2-methylbenzenesulfonic Acid in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 4-Hydroxy-2-methylbenzenesulfonic Acid?

Yes. Every lot of 4-Hydroxy-2-methylbenzenesulfonic Acid is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can 4-Hydroxy-2-methylbenzenesulfonic Acid be shipped internationally?

Yes. We export 4-Hydroxy-2-methylbenzenesulfonic Acid worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.