2-(tert-butyl)-1H-isoindole-1,3(2H)-dione

Also known as: 2-tert-butylisoindole-1,3-dione, 2-tert-butyl-1H-isoindole-1,3(2H)-dione, N-tert-butylphthalimide, N-tert-butylphthalimide, phthalimide, N-tert-butyl-, NSC 55128, 1H-Isoindole-1,3(2H)-dione, 2-(1,1-dimethylethyl)-

2-(tert-butyl)-1H-isoindole-1,3(2H)-dione (CAS 2141-99-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C12H13NO2 and a molecular weight of 203.23700 g/mol. Key properties include a boiling point of 294.7ºC at 760mmHg, a density of 1.203g/cm3 and a flash point of 120.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 2141-99-3
Jingsj CID: J-1144219-6
Molecular Formula: C₁₂H₁₃NO₂
Molecular Weight: 203.23700 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	294.7ºC at 760mmHg
Density	1.203g/cm3
Flash Point	120.5ºC
Exact Mass	203.09500
PSA	37.38000
LogP	2.01900
Vapor Pressure	0.00159mmHg at 25°C
Refractive Index	1.575

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-(tert-butyl)-1H-isoindole-1,3(2H)-dione?

The CAS number of 2-(tert-butyl)-1H-isoindole-1,3(2H)-dione is 2141-99-3.

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

2-(tert-butyl)-1H-isoindole-1,3(2H)-dione has molecular formula C12H13NO2 and molecular weight 203.23700 g/mol.

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

For 2-(tert-butyl)-1H-isoindole-1,3(2H)-dione, Upstream Products: tert-Butylamine, 1,2-Diiodobenzene, 2-Iodobenzoic acid; Downstream Products: tert-Butylamine.

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-(tert-butyl)-1H-isoindole-1,3(2H)-dione (CAS 2141-99-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1144219-6 (accessed 2026-11-09).

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