2-Mercaptopyridine-4-carboxylic acid
Also known as: 2-Mercapto-4-pyridinecarboxylic acid, 2-Thioxo-1,2-dihydropyridine-4-carboxylic acid, 2-Sulfanylisonicotinic acid, 2-Sulfanylidene-1,2-dihydropyridine-4-carboxylic acid, 4-Carboxy-2-mercapto-pyridin, 4-Pyridinecarboxylic acid, 1,2-dihydro-2-thioxo-, 2-mercaptoisonicotinic acid
2-Mercaptopyridine-4-carboxylic acid (CAS 18616-05-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H5NO2S and a molecular weight of 155.17400 g/mol. Key properties include a melting point of 305 °C, a boiling point of 259.9ºC at 760 mmHg, a density of 1.49g/cm3 and a flash point of 111ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 18616-05-2
- Jingsj CID
- J-34393-1
- Molecular Formula
- C6H5NO2S
- Molecular Weight
- 155.17400 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 305 °C |
|---|---|
| Boiling Point | 259.9ºC at 760 mmHg |
| Density | 1.49g/cm3 |
| Flash Point | 111ºC |
| Exact Mass | 155.00400 |
| PSA | 88.99000 |
| LogP | 1.06850 |
| Vapor Pressure | 0.00377mmHg at 25°C |
| Refractive Index | 1.694 |
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 2-Mercaptopyridine-4-carboxylic acid?
The CAS number of 2-Mercaptopyridine-4-carboxylic acid is 18616-05-2.
What are the molecular formula and molecular weight of 2-Mercaptopyridine-4-carboxylic acid?
2-Mercaptopyridine-4-carboxylic acid has molecular formula C6H5NO2S and molecular weight 155.17400 g/mol.
What are the upstream and downstream products of 2-Mercaptopyridine-4-carboxylic acid?
For 2-Mercaptopyridine-4-carboxylic acid, Upstream Products: 2-Chloro-4-pyridinecarboxylic acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-Mercaptopyridine-4-carboxylic acid (CAS 18616-05-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-34393-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.