4-Hydroxy-1-methyl-2-quinolone

Also known as: 4-Hydroxy-1-methyl-1,2-dihydroquinolin-2-one, 4-Hydroxy-N-methyl-2-quinolone, 1-Methyl-4-hydroxy-2(1H)-quinolinone, 4-Hydroxy-1-methyl-2(1H)-quinolone, 4-Hydroxy-N-methylcarbostyril, 1-methyl-4-hydroxyquinolin-2(1H)-one, 4-hydroxy-1-methylquinolin-2(1H)-one, 4-Hydroxy-1-methylcarbostyril, N-methyl-4-hydroxyquinolin-2(1H)-one, 1,2-dihydro-4-hydroxy-N-methylquinolin-2-one

4-Hydroxy-1-methyl-2-quinolone (CAS 1677-46-9) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C10H9NO2 and a molecular weight of 175.184 g/mol. Key properties include a melting point of 269-271 °C(lit.), a boiling point of 297.6±40.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 133.8±27.3 °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.

1677-46-9

Jingsj CID

J-42184-1

Molecular Formula

C₁₀H₉NO₂

Molecular Weight

175.184 g/mol

Category

Ketones

Last updated

8/21/2026