4-chloroquinolin-2(1H)-one
Also known as: 4-chloro-2-hydroxyquinoline, 4-chlorocarbostyril, 4-chloro-1H-quinolin-2-one, 4-chloro-2(1H)-quinolinone, 4-chloroquinolin-2-ol
4-chloroquinolin-2(1H)-one (CAS 20146-59-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H6ClNO and a molecular weight of 179.60300 g/mol. Key properties include a melting point of 254℃, a boiling point of 366.9ºC at 760mmHg, a density of 1.38g/cm3 and a flash point of 175.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 20146-59-2
- Jingsj CID
- J-1334161-2
- Molecular Formula
- C9H6ClNO
- Molecular Weight
- 179.60300 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 254℃ |
|---|---|
| Boiling Point | 366.9ºC at 760mmHg |
| Density | 1.38g/cm3 |
| Flash Point | 175.7ºC |
| Exact Mass | 179.01400 |
| PSA | 33.12000 |
| LogP | 2.59380 |
| Vapor Pressure | 1.42E-05mmHg at 25°C |
| Refractive Index | 1.641 |
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-chloroquinolin-2(1H)-one?
The CAS number of 4-chloroquinolin-2(1H)-one is 20146-59-2.
What are the molecular formula and molecular weight of 4-chloroquinolin-2(1H)-one?
4-chloroquinolin-2(1H)-one has molecular formula C9H6ClNO and molecular weight 179.60300 g/mol.
What are the upstream and downstream products of 4-chloroquinolin-2(1H)-one?
For 4-chloroquinolin-2(1H)-one, Upstream Products: 2,4-Dichloroquinoline, 4-Methoxybenzyl alcohol, Methanol; Downstream Products: 2,4-Dichloroquinoline, 4-chloro-6-nitroquinolin-2(1H)-one.
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-chloroquinolin-2(1H)-one (CAS 20146-59-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1334161-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.