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
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Density | 1.542 |
|---|---|
| Exact Mass | 253.04100 |
| PSA | 95.01000 |
| LogP | 2.98760 |
| Refractive Index | 1.714 |
Customs & Trade Information
| HS Code | 2922199090 |
|---|---|
| Summary | 2922199090. other amino-alcohols, 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 4-Hydroxy-7-(methylamino)naphthalene-2-sulfonic acid?
The CAS number of 4-Hydroxy-7-(methylamino)naphthalene-2-sulfonic acid is 22346-43-6.
What are the molecular formula and molecular weight of 4-Hydroxy-7-(methylamino)naphthalene-2-sulfonic acid?
4-Hydroxy-7-(methylamino)naphthalene-2-sulfonic acid has molecular formula C11H11NO4S and molecular weight 253.27400 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-(methylamino)naphthalene-2-sulfonic acid (CAS 22346-43-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1144098-7 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.