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5-Acetyl-8-hydroxy-2(1H)-quinolinone

Also known as: 5-ACETYL-8-HYDROXY-1H-QUINOLIN-2-ONE, 5-ACETYL-QUINOLINE-2,8-DIOL, 5-Acetyl-8-hydroxycarbostyril, 5-Acetyl-8-hydroxyquinolin-2(1H)-one, 5-Acetyl-1,2-dihydro-8-hydroxy-2-oxoquinoline, 1-(1,2-Dihydro-8-hydroxy-2-oxoquinolin-5-yl)ethan-1-one, 5-Acetylquinoline-2,8-diol, 5-acetyl-8-hydroxy-1,2-dihydroquinolin-2-one

5-Acetyl-8-hydroxy-2(1H)-quinolinone (CAS 62978-73-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H9NO3 and a molecular weight of 203.194 g/mol. Key properties include a melting point of >260ºC, a boiling point of 509.5±50.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 261.9±30.1 °C. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.
62978-73-8
Jingsj CID
J-1445911-1
Molecular Formula
C11H9NO3
Molecular Weight
203.194 g/mol
Category
Pharma Intermediates
Last updated
11/3/2026
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Physicochemical Properties

Melting Point>260ºC
Boiling Point509.5±50.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point261.9±30.1 °C
Exact Mass203.058243
PSA70.42000
LogP1.42
Vapor Pressure0.0±1.4 mmHg at 25°C
Refractive Index1.620
Storage Conditions2-8°C

Customs & Trade Information

HS Code2933790090
Summary2933790090. 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 5-Acetyl-8-hydroxy-2(1H)-quinolinone?

The CAS number of 5-Acetyl-8-hydroxy-2(1H)-quinolinone is 62978-73-8.

What are the molecular formula and molecular weight of 5-Acetyl-8-hydroxy-2(1H)-quinolinone?

5-Acetyl-8-hydroxy-2(1H)-quinolinone has molecular formula C11H9NO3 and molecular weight 203.194 g/mol.

What are the upstream and downstream products of 5-Acetyl-8-hydroxy-2(1H)-quinolinone?

For 5-Acetyl-8-hydroxy-2(1H)-quinolinone, Upstream Products: 2-oxo-1,2-dihydroquinolin-8-yl acetate, Acetyl chloride, 2,8-Quinolinediol; Downstream Products: 8-Benzyloxy-5-((R)-2-bromo-1-hydroxyethyl)-1H-quinolin-2-one, 5-Acetyl-8-(benzyloxy)-2(1H)-quinolinone, 8-Benzyloxy-5-(2-bromoacetyl)-2-hydroxyquinoline.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "5-Acetyl-8-hydroxy-2(1H)-quinolinone (CAS 62978-73-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1445911-1 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.