4-Hydroxypyridine-3-sulfonic acid
Also known as: 4-Hydroxy-3-pyridinesulfonic acid, 4-Pyridinol-3-sulfonic acid, 4-Hydroxypyridine-3-sulphonic acid, 4-Hydroxypyridie-3-sulphonic acid, 4-Hydroxypyridie-sulphonic acid, 4-Hydroxy-pyridin-3-sulfonsaeure, 3-Pyridinesulfonic acid, 4-hydroxy-, 4(1H)-pyridone-3-sulfonic acid, hydroxypyridinesulfonicacid, MFCD02093473, EINECS 257-243-2
4-Hydroxypyridine-3-sulfonic acid (CAS 51498-37-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5NO4S and a molecular weight of 175.163 g/mol. Key properties include a melting point of >300°C and a density of 1.7±0.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 51498-37-4
- Jingsj CID
- J-1510224-6
- Molecular Formula
- C5H5NO4S
- Molecular Weight
- 175.163 g/mol
- Category
- Pharma Intermediates
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | >300°C |
|---|---|
| Density | 1.7±0.1 g/cm3 |
| Exact Mass | 174.993927 |
| PSA | 95.87000 |
| LogP | -1.75 |
| Refractive Index | 1.619 |
Customs & Trade Information
| HS Code | 2933399090 |
|---|---|
| Summary | 2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 4-Hydroxypyridine-3-sulfonic acid?
The CAS number of 4-Hydroxypyridine-3-sulfonic acid is 51498-37-4.
What are the molecular formula and molecular weight of 4-Hydroxypyridine-3-sulfonic acid?
4-Hydroxypyridine-3-sulfonic acid has molecular formula C5H5NO4S and molecular weight 175.163 g/mol.
What are the upstream and downstream products of 4-Hydroxypyridine-3-sulfonic acid?
For 4-Hydroxypyridine-3-sulfonic acid, Downstream Products: 4-chloropyridine-3-sulfonyl chloride, 4-Chloro-3-pyridinesulfonamide, Torasemide.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Hydroxypyridine-3-sulfonic acid (CAS 51498-37-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1510224-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.