p-Anisidine-3-sulfonic acid

Also known as: 2-Amino-5-methoxybenzenesulfonic acid, 4-Aminoanisole-3-sulfonic acid, 4-Methoxyaniline-2-sulfonic acid, p-Anisidine-2-sulfonic acid, 2-amino-5-methoxybenzenesulphonic acid

p-Anisidine-3-sulfonic acid (CAS 13244-33-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H9NO4S and a molecular weight of 203.216 g/mol. Key properties include a melting point of 314-318ºC and a density of 1.5±0.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 13244-33-2
Jingsj CID: J-42315-4
Molecular Formula: C₇H₉NO₄S
Molecular Weight: 203.216 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	314-318ºC
Density	1.5±0.1 g/cm3
Exact Mass	203.025223
PSA	98.00000
LogP	0.34
Refractive Index	1.595

Customs & Trade Information

HS Code	2922299090
Summary	2922299090. other amino-naphthols and other amino-phenols, other than those containing more than one kind of oxygen function, their ethers and esters; salts thereof. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of p-Anisidine-3-sulfonic acid?

The CAS number of p-Anisidine-3-sulfonic acid is 13244-33-2.

What are the molecular formula and molecular weight of p-Anisidine-3-sulfonic acid?

p-Anisidine-3-sulfonic acid has molecular formula C7H9NO4S and molecular weight 203.216 g/mol.

What are the upstream and downstream products of p-Anisidine-3-sulfonic acid?

For p-Anisidine-3-sulfonic acid, Upstream Products: 6-Methoxybenzothiazole, p-Anisidine, 4-Nitroanisole.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "p-Anisidine-3-sulfonic acid (CAS 13244-33-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-42315-4 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.