4-Methylpyridine N-oxide
Also known as: 4-Picoline N-oxide, 4-Methylpyridine 1-oxide, 4-Picoline 1-oxide, 4-Methylpyridin-1-oxid, 4-picoline-1-oxide, γ-Picoline N-oxide, GAMMA-PICOLINE N-OXIDE, Pyridine, 4-methyl-, 1-oxide, MFCD00006210, EINECS 213-712-3
4-Methylpyridine N-oxide (CAS 1003-67-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H7NO and a molecular weight of 109.126 g/mol. Key properties include a melting point of 182-185 °C(lit.), a boiling point of 279.2±9.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 122.6±18.7 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1003-67-4
- Jingsj CID
- J-8998-5
- Molecular Formula
- C6H7NO
- Molecular Weight
- 109.126 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 182-185 °C(lit.) |
|---|---|
| Boiling Point | 279.2±9.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 122.6±18.7 °C |
| Exact Mass | 109.052765 |
| PSA | 25.46000 |
| LogP | -0.74 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.513 |
| Additional Property | soluble |
GHS Safety & Compliance
- 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-Methylpyridine N-oxide?
The CAS number of 4-Methylpyridine N-oxide is 1003-67-4.
What are the molecular formula and molecular weight of 4-Methylpyridine N-oxide?
4-Methylpyridine N-oxide has molecular formula C6H7NO and molecular weight 109.126 g/mol.
Is 4-Methylpyridine N-oxide hazardous?
4-Methylpyridine N-oxide has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 4-Methylpyridine N-oxide?
For 4-Methylpyridine N-oxide, Upstream Products: 4-Methylpyridine, 3-Methylpyridine, Benzoyl peroxide; Downstream Products: 4-Methylpyridine, 4-Methyl-2-phenylpyridine, 2-Chloro-4-picoline.
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-Methylpyridine N-oxide (CAS 1003-67-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-8998-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.