4-methylquinolin-2(1H)-one
Also known as: 2-hydroxy-4-methylquinoline, 2-hydroxylepidine, 2-lepidinol, 4-methyl-2-quinolinol, 4-methylcarbostyril, 4-methyl-2(1H)-quinolinone, 4-methyl-2-quinolone, 4-methylquinolin-2-ol, 4-methylquinolin-2(1H)-one, lepidone
4-methylquinolin-2(1H)-one (CAS 607-66-9) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C10H9NO and a molecular weight of 159.185 g/mol. Key properties include a melting point of 221-223 °C(lit.), a boiling point of 362.5±22.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 173.0±22.3 °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.
- 607-66-9
- Jingsj CID
- J-1377238-1
- Molecular Formula
- C10H9NO
- Molecular Weight
- 159.185 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 221-223 °C(lit.) |
|---|---|
| Boiling Point | 362.5±22.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 173.0±22.3 °C |
| Exact Mass | 159.068420 |
| PSA | 33.12000 |
| LogP | 2.41 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.666 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2933790090 |
|---|---|
| Summary | 2933790090. other lactams. VAT:17.0%. Tax rebate rate:9.0%. . MFN tariff:9.0%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 4-methylquinolin-2(1H)-one?
The CAS number of 4-methylquinolin-2(1H)-one is 607-66-9.
What are the molecular formula and molecular weight of 4-methylquinolin-2(1H)-one?
4-methylquinolin-2(1H)-one has molecular formula C10H9NO and molecular weight 159.185 g/mol.
Is 4-methylquinolin-2(1H)-one hazardous?
4-methylquinolin-2(1H)-one 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-methylquinolin-2(1H)-one?
For 4-methylquinolin-2(1H)-one, Upstream Products: Ethyl acetoacetate, Acetoacetanilide, 2-Chloro-4-methylquinoline; Downstream Products: 3-bromo-4-methylquinolin-2(1H)-one, 4-methylquinolin-2(1H)-one, 4-Methylquinoline-2(1H)-thione.
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-methylquinolin-2(1H)-one (CAS 607-66-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1377238-1 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.