3-Methylpyridine N-oxide
Also known as: 3-Picoline N-oxide, 3-Methylpyridine 1-oxide, β-Picoline N-oxide, beta-Picoline N-oxide, 3-Picoline 1-oxide, 3-Methylpyridine 1-oxide, Pyridine, 3-methyl-, 1-oxide
3-Methylpyridine N-oxide (CAS 1003-73-2) 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 37-39 °C(lit.), a boiling point of 282.3±0.0 °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.
- 1003-73-2
- Jingsj CID
- J-11549-1
- 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 | 37-39 °C(lit.) |
|---|---|
| Boiling Point | 282.3±0.0 °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±0.5 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 3-Methylpyridine N-oxide?
The CAS number of 3-Methylpyridine N-oxide is 1003-73-2.
What are the molecular formula and molecular weight of 3-Methylpyridine N-oxide?
3-Methylpyridine N-oxide has molecular formula C6H7NO and molecular weight 109.126 g/mol.
Is 3-Methylpyridine N-oxide hazardous?
3-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 3-Methylpyridine N-oxide?
For 3-Methylpyridine N-oxide, Upstream Products: 3-Methylpyridine; Downstream Products: 5-methylpyridin-3-ol, 3-methyl-N-nitropyridin-4-amine, 2-chloro-5-methylpyridine-3,4-diamine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Methylpyridine N-oxide (CAS 1003-73-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-11549-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.