4-Chloro-2-hydroxypyridine
Also known as: 4-Chloropyridin-2-ol, 4-Chloro-2-pyridinol, 4-Chloropyridin-2(1H)-one, 4-Chloro-2(1H)-pyridinone, 2-Hydroxy-4-chloropyridine, 4-Chloro-1H-pyridin-2-one, 2(1H)-Pyridinone, 4-chloro-, 4-CHLORO-2-HYDROXYPYRIDINE, 98+%, MFCD03093022
4-Chloro-2-hydroxypyridine (CAS 40673-25-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H4ClNO and a molecular weight of 129.544 g/mol. Key properties include a melting point of 177-179°C, a boiling point of 309.1±22.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 140.7±22.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 40673-25-4
- Jingsj CID
- J-1059670-0
- Molecular Formula
- C5H4ClNO
- Molecular Weight
- 129.544 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 177-179°C |
|---|---|
| Boiling Point | 309.1±22.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 140.7±22.3 °C |
| Exact Mass | 128.998138 |
| PSA | 33.12000 |
| LogP | 0.13 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.584 |
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-Chloro-2-hydroxypyridine?
The CAS number of 4-Chloro-2-hydroxypyridine is 40673-25-4.
What are the molecular formula and molecular weight of 4-Chloro-2-hydroxypyridine?
4-Chloro-2-hydroxypyridine has molecular formula C5H4ClNO and molecular weight 129.544 g/mol.
What are the upstream and downstream products of 4-Chloro-2-hydroxypyridine?
For 4-Chloro-2-hydroxypyridine, Downstream Products: 4-Phenylpyridin-2-ol, 4-Chloro-2-methoxypyridine, 2(1H)-Pyridone.
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-Chloro-2-hydroxypyridine (CAS 40673-25-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1059670-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.