4-Nitropyridine N-oxide
Also known as: 4-Nitropyridine 1-oxide, 4-Nitro-N-oxopyridine, 4-Nitropyridine oxide, 4-Nitraminopyridine N-oxide, Pyridine, 4-nitro-, 1-oxide, p-Nitropyridine N-oxide, NITROPYRIDINE-N-OXIDE
4-Nitropyridine N-oxide (CAS 1124-33-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H4N2O3 and a molecular weight of 140.09700 g/mol. Key properties include a melting point of 159-162 °C(lit.), a boiling point of 397.2ºC at 760 mmHg, a density of 1.43 g/cm3 and a flash point of 194ºC. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1124-33-0
- Jingsj CID
- J-1498250-4
- Molecular Formula
- C5H4N2O3
- Molecular Weight
- 140.09700 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 159-162 °C(lit.) |
|---|---|
| Boiling Point | 397.2ºC at 760 mmHg |
| Density | 1.43 g/cm3 |
| Flash Point | 194ºC |
| Exact Mass | 140.02200 |
| PSA | 71.28000 |
| LogP | 1.54650 |
| Additional Property | insoluble |
GHS Safety & Compliance
- H301 — Toxic if swallowed
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
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-Nitropyridine N-oxide?
The CAS number of 4-Nitropyridine N-oxide is 1124-33-0.
What are the molecular formula and molecular weight of 4-Nitropyridine N-oxide?
4-Nitropyridine N-oxide has molecular formula C5H4N2O3 and molecular weight 140.09700 g/mol.
Is 4-Nitropyridine N-oxide hazardous?
4-Nitropyridine N-oxide has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 4-Nitropyridine N-oxide?
For 4-Nitropyridine N-oxide, Upstream Products: Pyridine N-oxide, 4-Nitropyridine; Downstream Products: 4-Ethoxypyridine, 4-Pyridinol, 3-nitro-, 1-oxide, 3-Bromo-4-hydroxypyridine.
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-Nitropyridine N-oxide (CAS 1124-33-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1498250-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.