2-o-Tolyl-4H-isoquinoline-1,3-dione

2-邻甲苯-4H-异喹啉-1,3-二酮

Also known as: 2-(2-methylphenyl)-4H-isoquinoline-1,3-dione, 2-(2-methylphenyl)-1,2,3,4-tetrahydroisoquinoline-1,3-dione, 2-(o-tolyl)isoquinoline-1,3(2H,4H)-dione, 2-o-Tolyl-4H-isochinolin-1,3-dion

2-o-Tolyl-4H-isoquinoline-1,3-dione (CAS 101273-81-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C16H13NO2 and a molecular weight of 251.28000 g/mol. It is also known as 2-(2-methylphenyl)-4H-isoquinoline-1,3-dione, 2-(2-methylphenyl)-1,2,3,4-tetrahydroisoquinoline-1,3-dione and 2-(o-tolyl)isoquinoline-1,3(2H,4H)-dione. Key properties include a boiling point of 440.1ºC at 760mmHg, a density of 1.251g/cm3 and a flash point of 206ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
101273-81-8
Jingsj CID
J-1151731-9
Molecular Formula
C16H13NO2
Chinese Name
2-邻甲苯-4H-异喹啉-1,3-二酮
Molecular Weight
251.28000 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point440.1ºC at 760mmHg
Density1.251g/cm3
Flash Point206ºC

Frequently Asked Questions

What is the CAS number of 2-o-Tolyl-4H-isoquinoline-1,3-dione?

The CAS number of 2-o-Tolyl-4H-isoquinoline-1,3-dione is 101273-81-8.

What are the molecular formula and molecular weight of 2-o-Tolyl-4H-isoquinoline-1,3-dione?

2-o-Tolyl-4H-isoquinoline-1,3-dione has molecular formula C16H13NO2 and molecular weight 251.28000 g/mol.

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

Last updated:

How to cite: Jingsj. "2-o-Tolyl-4H-isoquinoline-1,3-dione (CAS 101273-81-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1151731-9 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.