1-(5-methylpyridin-3-yl)ethanone
Also known as: 3-acetyl-5-methylpyridine, 1-(5-methyl-3-pyridyl)ethanone, 1-(5-methylpyridin-3-yl)ethan-1-one, 3-acetyl-5-methylpyridin
1-(5-methylpyridin-3-yl)ethanone (CAS 42972-46-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H9NO and a molecular weight of 135.163 g/mol. Key properties include a boiling point of 233.6±20.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 103.9±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 42972-46-3
- Jingsj CID
- J-1168033-4
- Molecular Formula
- C8H9NO
- Molecular Weight
- 135.163 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 233.6±20.0 °C at 760 mmHg |
|---|---|
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 103.9±0.0 °C |
| Exact Mass | 135.068420 |
| PSA | 29.96000 |
| LogP | 0.93 |
| Vapor Pressure | 0.1±0.5 mmHg at 25°C |
| Refractive Index | 1.513 |
| 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 1-(5-methylpyridin-3-yl)ethanone?
The CAS number of 1-(5-methylpyridin-3-yl)ethanone is 42972-46-3.
What are the molecular formula and molecular weight of 1-(5-methylpyridin-3-yl)ethanone?
1-(5-methylpyridin-3-yl)ethanone has molecular formula C8H9NO and molecular weight 135.163 g/mol.
What are the upstream and downstream products of 1-(5-methylpyridin-3-yl)ethanone?
For 1-(5-methylpyridin-3-yl)ethanone, Upstream Products: 3-Bromo-5-methylpyridine, N-Methoxy-N-methylacetamide, 3-Cyano-5-methylpyridine; Downstream Products: 5-Methylnicotinic acid, Methyl 5-methylnicotinate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-(5-methylpyridin-3-yl)ethanone (CAS 42972-46-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1168033-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.