3-Methyl-1(2H)-isoquinolinone

Also known as: 3-Methylisoquinolin-1(2H)-one, 3-Methyl-1(2H)-isoquinolone, 3-Methyl-1-isoquinolone, 3-Methyl-2H-isoquinolin-1-one, 3-Methylisoquinolin-1-ol, 3-methyl-1,2-dihydroisoquinolin-1-one, 3-Methyl-1(2H)-isochinolon, 3-methyl-1(2H)-isoquinolone, 3-methyl-1-isoquinolinol, 3-methyl-2H-isoquinolin-1-one, 3-methyl-isoquinolin-1-ol, 3-methylisoquinolin-1(2H)-one, 3-methylisoquinolone

3-Methyl-1(2H)-isoquinolinone (CAS 7114-80-9) 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 159.185 g/mol. Key properties include a boiling point of 371.7±35.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 217.7±10.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 7114-80-9
Jingsj CID: J-1446221-6
Molecular Formula: C₁₀H₉NO
Molecular Weight: 159.185 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	371.7±35.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	217.7±10.9 °C
Exact Mass	159.068420
PSA	33.12000
LogP	1.73
Vapor Pressure	0.0±0.8 mmHg at 25°C
Refractive Index	1.574

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-Methyl-1(2H)-isoquinolinone?

The CAS number of 3-Methyl-1(2H)-isoquinolinone is 7114-80-9.

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

3-Methyl-1(2H)-isoquinolinone has molecular formula C10H9NO and molecular weight 159.185 g/mol.

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

For 3-Methyl-1(2H)-isoquinolinone, Downstream Products: 3-Methylisoquinoline, 1-Chloro-3-methylisoquinoline.

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-Methyl-1(2H)-isoquinolinone (CAS 7114-80-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1446221-6 (accessed 2026-11-09).

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