2,3-Dichloro-N-methylmaleimide

Also known as: 3,4-Dichloro-1-methyl-1H-pyrrole-2,5-dione, 3,4-Dichloro-1-methyl-2,5-dihydro-1H-pyrrole-2,5-dione, 3,4-Dichloro-1-methylmaleimide, 3,4-Dichloro-N-methylmaleimide, N-Methyl-3,4-dichloromaleimide, N-Methyl-2,3-dichloromaleimide, N-Methyldichloromaleimide, Dichloro-N-methylmaleimide, n-Methyl-dichloromaleinimide, Maleimide, dichloro-N-methyl-

2,3-Dichloro-N-methylmaleimide (CAS 1123-61-1) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C5H3Cl2NO2 and a molecular weight of 179.989 g/mol. Key properties include a boiling point of 205.7±40.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 78.2±27.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1123-61-1
Jingsj CID: J-28313-6
Molecular Formula: C₅H₃Cl₂NO₂
Molecular Weight: 179.989 g/mol
Category: Organic Bases
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	205.7±40.0 °C at 760 mmHg
Density	1.6±0.1 g/cm3
Flash Point	78.2±27.3 °C
Exact Mass	178.954086
PSA	37.38000
LogP	0.71
Vapor Pressure	0.2±0.4 mmHg at 25°C
Refractive Index	1.576

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-Dichloro-N-methylmaleimide?

The CAS number of 2,3-Dichloro-N-methylmaleimide is 1123-61-1.

What are the molecular formula and molecular weight of 2,3-Dichloro-N-methylmaleimide?

2,3-Dichloro-N-methylmaleimide has molecular formula C5H3Cl2NO2 and molecular weight 179.989 g/mol.

What are the upstream and downstream products of 2,3-Dichloro-N-methylmaleimide?

For 2,3-Dichloro-N-methylmaleimide, Upstream Products: 2,3-Dichloromaleic anhydride, Methylamine hydrochloride, N-Methylmaleimide; Downstream Products: Bisindolylmaleimide V.

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-Dichloro-N-methylmaleimide (CAS 1123-61-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-28313-6 (accessed 2026-11-09).

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