4-Hydroxy-7-(methylamino)naphthalene-2-sulfonic acid

7-甲氨基-4-羟基-2-萘磺酸

Also known as: N-Methyl J acid, Methyl J Acid, 4-Hydroxy-7-methylamino-2-naphthalenesulfonic acid, 2-(N-Methylamino)-5-naphthol-7-sulfonic acid, 5-Hydroxy-2-methylamino-7-naphthalenesulfonic acid, 6-[N-METHYLAMINO]-1-NAPHTHOL-3-SULFONIC ACID, 7-Amino-4-hydroxy-N-methyl-2-naphthalenesulfonic acid, N-Methyl I acid, 1-hydroxy-6-(methylamino)naphthalene-3-sulfonic acid

4-Hydroxy-7-(methylamino)naphthalene-2-sulfonic acid (CAS 22346-43-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H11NO4S and a molecular weight of 253.27400 g/mol. It is also known as N-Methyl J acid, Methyl J Acid and 4-Hydroxy-7-methylamino-2-naphthalenesulfonic acid. Key property: a density of 1.542. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

22346-43-6

Jingsj CID

J-1144098-7

Molecular Formula

C₁₁H₁₁NO₄S

Chinese Name

7-甲氨基-4-羟基-2-萘磺酸

Molecular Weight

253.27400 g/mol

Category

Organic Acids

Last updated

8/21/2026