2-(3,3-dimethyl-2-oxobutyl)-1H-isoindole-1,3(2H)-dione

Also known as: 2-(3,3-dimethyl-2-oxobutyl)isoindole-1,3-dione, 1-Phthalimido-3,3-dimethyl-2-butanone, 1-phthalimido-3,3-dimethyl-butan-2-one, 1H-isoindole-1,3(2H)-dione, 2-(3,3-dimethyl-2-oxobutyl)-, 2-(2-keto-3,3-dimethyl-butyl)isoindoline-1,3-quinone, 2-(3,3-dimethyl-2-oxobutyl)-1H-isoindole-1,3(2H)-dione, 3,3-dimethyl-1-phthalimidobutan-2-one, HMS1533E13, N-phthalimido-3,3-dimethylbutan-2-one

2-(3,3-dimethyl-2-oxobutyl)-1H-isoindole-1,3(2H)-dione (CAS 56658-35-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C14H15NO3 and a molecular weight of 245.27400 g/mol. Key properties include a boiling point of 365.4ºC at 760 mmHg, a density of 1.206g/cm3 and a flash point of 156.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 56658-35-6
Jingsj CID: J-1180133-5
Molecular Formula: C₁₄H₁₅NO₃
Molecular Weight: 245.27400 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	365.4ºC at 760 mmHg
Density	1.206g/cm3
Flash Point	156.4ºC
Exact Mass	245.10500
PSA	54.45000
LogP	1.83570
Refractive Index	1.557

Customs & Trade Information

HS Code	2925190090
Summary	2925190090 other imides and their derivatives; salts thereof VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 2-(3,3-dimethyl-2-oxobutyl)-1H-isoindole-1,3(2H)-dione?

The CAS number of 2-(3,3-dimethyl-2-oxobutyl)-1H-isoindole-1,3(2H)-dione is 56658-35-6.

What are the molecular formula and molecular weight of 2-(3,3-dimethyl-2-oxobutyl)-1H-isoindole-1,3(2H)-dione?

2-(3,3-dimethyl-2-oxobutyl)-1H-isoindole-1,3(2H)-dione has molecular formula C14H15NO3 and molecular weight 245.27400 g/mol.

What are the upstream and downstream products of 2-(3,3-dimethyl-2-oxobutyl)-1H-isoindole-1,3(2H)-dione?

For 2-(3,3-dimethyl-2-oxobutyl)-1H-isoindole-1,3(2H)-dione, Upstream Products: Potassium phthalimide, 1-Bromopinacolone, 1-Chloropinacolone.

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. "2-(3,3-dimethyl-2-oxobutyl)-1H-isoindole-1,3(2H)-dione (CAS 56658-35-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1180133-5 (accessed 2026-11-09).

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