4-Amino-5-methoxy-2-methylbenzenesulfonic Acid 6471-78-9

Name: 4-Amino-5-methoxy-2-methylbenzenesulfonic Acid
Brand: Vaqora Chemicals
SKU: VQ-039288

About 4-Amino-5-methoxy-2-methylbenzenesulfonic Acid

Listed under CAS 6471-78-9, 4-Amino-5-methoxy-2-methylbenzenesulfonic Acid is a process intermediate or related compound of Fludarabine available from Vaqora Chemicals. Formula C8H11NO4S, molecular weight 217.24 g/mol. Alternative names: 4-Amino-5-methoxy-2-toluenesulfonic acid and Cresidine-p-sulfonic Acid.

The product is provided as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

It is a process intermediate or related compound in the synthesis of Fludarabine, useful for route development, impurity fate-and-purge studies and analytical method development. Our customers for this product work in 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

API route development
Impurity fate & purge studies
Analytical method development
Fine chemical synthesis

Industries

Related to Fludarabine

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

Fludarabine impurities

Specifications & identifiers

Chemical identifiers
Product name	4-Amino-5-methoxy-2-methylbenzenesulfonic Acid
Catalogue No.	VQ-039288
CAS Number	6471-78-9
IUPAC name	4-amino-5-methoxy-2-methylbenzenesulfonic acid
Molecular formula	C₈H₁₁NO₄S
Molecular weight	217.24 g/mol
Exact mass	217.0409
HSN code	2933
InChIKey	JBAVAJIXZVRJHT-UHFFFAOYSA-N
SMILES	CC1=CC(=C(C=C1S(=O)(=O)O)OC)N
PubChem CID	80961

Physical properties
Physical form	Solid
LogP (XLogP3)	0.3
H-bond donors / acceptors	2 / 5
TPSA	98 Å²
Synonyms	Benzenesulfonic acid, 4-amino-5-methoxy-2-methyl-, 4-Amino-5-methoxy-2-toluenesulfonic acid, Cresidine-p-sulfonic Acid, 2-Methoxy-5-methyl-4-sulfoaniline, 5-Methoxy-2-methylsulphanilic acid, o-Toluenesulfonic acid, 4-amino-5-methoxy-, 4-Amino-5-methoxy-o-toluenesulfonic Acid, 4-Amino-5-methoxy-2-methylbenzensulfonic acid, p-Cresidine-4-sulfonic acid, 3-Amino-4-methoxy-toluene-6-sulfonic acid, p-Cresidine-4-sulfo, 3-Amino-4-methoxytoluene-6-sulfonic acid

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Signal word: Danger

Hazard statements

H302+H312+H332Harmful if swallowed, in contact with skin or if inhaled
H315Causes skin irritation
H318Causes serious eye damage
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P305 + P354 + P338, P317, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, 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-Amino-5-methoxy-2-methylbenzenesulfonic Acid?

The CAS Registry Number of 4-Amino-5-methoxy-2-methylbenzenesulfonic Acid is 6471-78-9. It is also known as Benzenesulfonic acid, 4-amino-5-methoxy-2-methyl-, 4-Amino-5-methoxy-2-toluenesulfonic acid, Cresidine-p-sulfonic Acid.

What is the molecular formula and molecular weight of 4-Amino-5-methoxy-2-methylbenzenesulfonic Acid?

4-Amino-5-methoxy-2-methylbenzenesulfonic Acid has the molecular formula C8H11NO4S and a molecular weight of 217.24 g/mol. Its IUPAC name is 4-amino-5-methoxy-2-methylbenzenesulfonic acid.

What is 4-Amino-5-methoxy-2-methylbenzenesulfonic Acid used for?

4-Amino-5-methoxy-2-methylbenzenesulfonic Acid is supplied as a characterised reference material related to Fludarabine. 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-Amino-5-methoxy-2-methylbenzenesulfonic Acid can I order?

We supply 4-Amino-5-methoxy-2-methylbenzenesulfonic Acid, 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-Amino-5-methoxy-2-methylbenzenesulfonic Acid?

Yes. Every lot of 4-Amino-5-methoxy-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-Amino-5-methoxy-2-methylbenzenesulfonic Acid be shipped internationally?

Yes. 4-Amino-5-methoxy-2-methylbenzenesulfonic 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.