3-methylquinolin-2(1H)-one

Also known as: 3-METHYLQUINOLIN-2-ONE, 3-Methyl-1,2-dihydroquinoline-2-one, 3-Methyl-2(1H)-quinolinone, 3-Methyl-2-quinolinone, 3-Methylcarbostyril, 3-Methylquinolin-2-one, 3-methyl-1H-quinolin-2-one, 3-methyl-2-quinolone, 3-methyl-3H-quinolin-2-one, 3-methylcarbostyril

3-methylquinolin-2(1H)-one (CAS 2721-59-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H9NO and a molecular weight of 159.18500 g/mol. Key properties include a boiling point of 346ºC at 760mmHg, a density of 1.136g/cm3 and a flash point of 201.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 2721-59-7
Jingsj CID: J-1330559-4
Molecular Formula: C₁₀H₉NO
Molecular Weight: 159.18500 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	346ºC at 760mmHg
Density	1.136g/cm3
Flash Point	201.8ºC
Exact Mass	159.06800
PSA	32.86000
LogP	1.83650
Vapor Pressure	5.94E-05mmHg at 25°C
Refractive Index	1.573

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 3-methylquinolin-2(1H)-one?

The CAS number of 3-methylquinolin-2(1H)-one is 2721-59-7.

What are the molecular formula and molecular weight of 3-methylquinolin-2(1H)-one?

3-methylquinolin-2(1H)-one has molecular formula C10H9NO and molecular weight 159.18500 g/mol.

What are the upstream and downstream products of 3-methylquinolin-2(1H)-one?

For 3-methylquinolin-2(1H)-one, Upstream Products: 3-Methylquinoline N-oxide, 2-Nitrobenzaldehyde.

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

Last updated: 8/21/2026

How to cite: Jingsj. "3-methylquinolin-2(1H)-one (CAS 2721-59-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1330559-4 (accessed 2026-11-09).

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