4-Hydroxy-7-[(4-methoxyphenyl)amino]naphthalene-2-sulfonic acid

4-羟基-7-[(4-甲氧基苯基)氨基]萘-2-磺酸

Also known as: 2-Naphthalenesulfonic acid, 4-hydroxy-7-[(4-methoxyphenyl)amino]-, 4-Hydroxy-7-((4-methoxyphenyl)amino)naphthalen-2-sulphonic acid, 4-Hydroxy-7-[(4-methoxyphenyl)amino]-2-naphthalenesulfonic acid, 4-hydroxy-7-(4-methoxyanilino)naphthalene-2-sulfonic acid, 1-Hydroxy-6-(4-methoxyphenylamino)-3-naphthalenesulfonic acid

4-Hydroxy-7-[(4-methoxyphenyl)amino]naphthalene-2-sulfonic acid (CAS 118-51-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C17H15NO5S and a molecular weight of 345.37000 g/mol. It is also known as 2-Naphthalenesulfonic acid, 4-hydroxy-7-[(4-methoxyphenyl)amino]-, 4-Hydroxy-7-((4-methoxyphenyl)amino)naphthalen-2-sulphonic acid and 4-Hydroxy-7-[(4-methoxyphenyl)amino]-2-naphthalenesulfonic acid. Key property: a density of 1.47g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
118-51-4
Jingsj CID
J-6622-6
Molecular Formula
C17H15NO5S
Chinese Name
4-羟基-7-[(4-甲氧基苯基)氨基]萘-2-磺酸
Molecular Weight
345.37000 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Density1.47g/cm3

Frequently Asked Questions

What is the CAS number of 4-Hydroxy-7-[(4-methoxyphenyl)amino]naphthalene-2-sulfonic acid?

The CAS number of 4-Hydroxy-7-[(4-methoxyphenyl)amino]naphthalene-2-sulfonic acid is 118-51-4.

What are the molecular formula and molecular weight of 4-Hydroxy-7-[(4-methoxyphenyl)amino]naphthalene-2-sulfonic acid?

4-Hydroxy-7-[(4-methoxyphenyl)amino]naphthalene-2-sulfonic acid has molecular formula C17H15NO5S and molecular weight 345.37000 g/mol.

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

Last updated:

How to cite: Jingsj. "4-Hydroxy-7-[(4-methoxyphenyl)amino]naphthalene-2-sulfonic acid (CAS 118-51-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-6622-6 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.