Nicotinic acid N-oxide
Also known as: 3-Pyridinecarboxylic acid 1-oxide, Pyridine-3-carboxylic acid N-oxide, 1-oxidopyridine-3-carboxylic acid, 3-carboxypyridine 1-oxide, Oxiniacic acid, Nicotinic acid 1-oxide, Nicotinic acid oxide, N-oxopyridine-3-carboxylic acid, 1-oxidopyridin-1-ium-3-carboxylic acid
Nicotinic acid N-oxide (CAS 2398-81-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H5NO3 and a molecular weight of 139.109 g/mol. Key properties include a melting point of 254-255 °C (dec.)(lit.), a boiling point of 469.0±18.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 237.4±21.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 2398-81-4
- Jingsj CID
- J-24719-8
- Molecular Formula
- C6H5NO3
- Molecular Weight
- 139.109 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 254-255 °C (dec.)(lit.) |
|---|---|
| Boiling Point | 469.0±18.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 237.4±21.2 °C |
| Exact Mass | 139.026947 |
| PSA | 62.76000 |
| LogP | -1.52 |
| Vapor Pressure | 0.0±1.2 mmHg at 25°C |
| Refractive Index | 1.577 |
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 Nicotinic acid N-oxide?
The CAS number of Nicotinic acid N-oxide is 2398-81-4.
What are the molecular formula and molecular weight of Nicotinic acid N-oxide?
Nicotinic acid N-oxide has molecular formula C6H5NO3 and molecular weight 139.109 g/mol.
What are the upstream and downstream products of Nicotinic acid N-oxide?
For Nicotinic acid N-oxide, Upstream Products: Nicotinic acid, 2,3-Pyridinedicarboxylic acid, Nicotinic anhydride; Downstream Products: 6-Hydroxynicotinic acid, 2-Hydroxynicotinic acid, 6-Aminonicotinic 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. "Nicotinic acid N-oxide (CAS 2398-81-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-24719-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.