5-Methyl-2,3-dihydro-isoindol-1-one

5-甲基-异吲哚啉-1-酮

Also known as: 5-Methyl-1-isoindolinone, 5-Methyl-1-oxo-isoindoline, 5-Methylisoindolin-1-one, 5-Methyl-2,3-dihydro-1H-isoindol-1-one, 1H-Isoindol-1-one, 2,3-dihydro-5-methyl-

5-Methyl-2,3-dihydro-isoindol-1-one (CAS 65399-03-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H9NO and a molecular weight of 147.17400 g/mol. It is also known as 5-Methyl-1-isoindolinone, 5-Methyl-1-oxo-isoindoline and 5-Methylisoindolin-1-one. Key property: a density of 1.155±0.06 g/cm3 (20ºC 760 Torr). No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
65399-03-3
Jingsj CID
J-1086312-1
Molecular Formula
C9H9NO
Chinese Name
5-甲基-异吲哚啉-1-酮
Molecular Weight
147.17400 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Density1.155±0.06 g/cm3 (20ºC 760 Torr)

Frequently Asked Questions

What is the CAS number of 5-Methyl-2,3-dihydro-isoindol-1-one?

The CAS number of 5-Methyl-2,3-dihydro-isoindol-1-one is 65399-03-3.

What are the molecular formula and molecular weight of 5-Methyl-2,3-dihydro-isoindol-1-one?

5-Methyl-2,3-dihydro-isoindol-1-one has molecular formula C9H9NO and molecular weight 147.17400 g/mol.

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

Last updated:

How to cite: Jingsj. "5-Methyl-2,3-dihydro-isoindol-1-one (CAS 65399-03-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1086312-1 (accessed 2026-10-22).

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