4-Hydroxy-3-methoxybenzenesulfonic Acid

Name: 4-Hydroxy-3-methoxybenzenesulfonic Acid
Brand: Vaqora Chemicals
SKU: VQ-043187

About 4-Hydroxy-3-methoxybenzenesulfonic Acid

4-Hydroxy-3-methoxybenzenesulfonic Acid (CAS 7134-11-4) is a metabolite or degradation product of Guaiacol offered by Vaqora Chemicals. Formula C7H8O5S, molecular weight 204.2 g/mol. It is also known as Sulfogaiacol or Guaiacolsulfonic acid.

It is supplied as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. It carries the GHS signal word “Warning” with 4 hazard statements. Review the Safety Data Sheet before use.

It is used in metabolite identification, stability-indicating method development and impurity profiling of Guaiacol, as well as in QC testing and ANDA/DMF documentation. Typical end-use sectors are 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 Guaiacol

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

Guaiacol impurities

Specifications & identifiers

Chemical identifiers
Product name	4-Hydroxy-3-methoxybenzenesulfonic Acid
Catalogue No.	VQ-043187
CAS Number	7134-11-4
IUPAC name	4-hydroxy-3-methoxybenzenesulfonic acid
Molecular formula	C₇H₈O₅S
Molecular weight	204.2 g/mol
Exact mass	204.0092
Grade	Reference Standard
HSN code	38229090
InChIKey	QDRCGSIKAHSALR-UHFFFAOYSA-N
SMILES	COC1=C(C=CC(=C1)S(=O)(=O)O)O
PubChem CID	4874

Physical properties
Physical form	Solid
LogP (XLogP3)	-0.4
H-bond donors / acceptors	2 / 5
TPSA	92.2 Å²
Synonyms	Sulfogaiacol, Guaiacolsulfonic acid, 4-guaiacolsulfonic acid, Benzenesulfonic acid, 4-hydroxy-3-methoxy-, Guaiacolsulfonate, 4-hydroxy-3-methoxybenzene-1-sulfonic acid, 4-Hydroxy-3-methoxybenzenesulphonic acid, Guajacol-5-sulfosaure

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H332Harmful if inhaled

Precautionary statements: P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P317, P321, P330, P332 + P317, P337 + P317, P362 + P364, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

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-3-methoxybenzenesulfonic Acid?

The CAS Registry Number of 4-Hydroxy-3-methoxybenzenesulfonic Acid is 7134-11-4. It is also known as Sulfogaiacol, Guaiacolsulfonic acid, 4-guaiacolsulfonic acid.

What is the molecular formula and molecular weight of 4-Hydroxy-3-methoxybenzenesulfonic Acid?

4-Hydroxy-3-methoxybenzenesulfonic Acid has the molecular formula C7H8O5S and a molecular weight of 204.2 g/mol. Its IUPAC name is 4-hydroxy-3-methoxybenzenesulfonic acid.

What is 4-Hydroxy-3-methoxybenzenesulfonic Acid used for?

4-Hydroxy-3-methoxybenzenesulfonic Acid is supplied as a characterised reference material related to Guaiacol. 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-3-methoxybenzenesulfonic Acid can I order?

We supply 4-Hydroxy-3-methoxybenzenesulfonic 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-3-methoxybenzenesulfonic Acid?

Yes. Every lot of 4-Hydroxy-3-methoxybenzenesulfonic 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-3-methoxybenzenesulfonic Acid be shipped internationally?

Yes. 4-Hydroxy-3-methoxybenzenesulfonic Acid is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.