4-Iodopyridin-2(1H)-one
Also known as: 4-Iodo-2-pyridone, 4-Iodo-2(1H)-pyridinone, 4-iodo-1H-pyridin-2-one, 2-Hydroxy-4-iodopyridine, 4-Iodo-2-hydroxypyridine, 4-Iodo-1,2-dihydropyridin-2-one, 4-iodo-2-pyridinone, 4-Iodo-pyridin-2-ol
4-Iodopyridin-2(1H)-one (CAS 858839-90-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H4INO and a molecular weight of 220.996 g/mol. Key properties include a melting point of 186-188ºC, a boiling point of 321.6±35.0 °C at 760 mmHg, a density of 2.1±0.1 g/cm3 and a flash point of 148.3±25.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 858839-90-4
- Jingsj CID
- J-1306207-2
- Molecular Formula
- C5H4INO
- Molecular Weight
- 220.996 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 186-188ºC |
|---|---|
| Boiling Point | 321.6±35.0 °C at 760 mmHg |
| Density | 2.1±0.1 g/cm3 |
| Flash Point | 148.3±25.9 °C |
| Exact Mass | 220.933746 |
| PSA | 32.86000 |
| LogP | 0.27 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.682 |
| Storage Conditions | 2-8°C |
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-Iodopyridin-2(1H)-one?
The CAS number of 4-Iodopyridin-2(1H)-one is 858839-90-4.
What are the molecular formula and molecular weight of 4-Iodopyridin-2(1H)-one?
4-Iodopyridin-2(1H)-one has molecular formula C5H4INO and molecular weight 220.996 g/mol.
What are the upstream and downstream products of 4-Iodopyridin-2(1H)-one?
For 4-Iodopyridin-2(1H)-one, Upstream Products: 2-Chloro-4-iodopyridine, 2-Fluoro-4-iodopyridine; Downstream Products: 4-Iodo-1-methylpyridin-2(1H)-one.
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-Iodopyridin-2(1H)-one (CAS 858839-90-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1306207-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.