N-(2-Hydroxyethyl)maleimide

N-(2-羟乙基)马来酰亚胺

Also known as: 1-(2-Hydroxyethyl)pyrrole-2,5-dione, 1-(2-Hydroxyethyl)-1H-pyrrole-2,5-dione, 1H-Pyrrole-2,5-dione, 1-(2-hydroxyethyl)-, 2-Hydroxyethylmaleimide, N-(Ethanol)maleimide, HEMI, N-2-Hydroxyethylmaleimide, N-Hydroxyethylmaleimide

N-(2-Hydroxyethyl)maleimide (CAS 1585-90-6) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C6H7NO3 and a molecular weight of 141.12 g/mol. It is also known as 1-(2-Hydroxyethyl)pyrrole-2,5-dione, 1-(2-Hydroxyethyl)-1H-pyrrole-2,5-dione and 1H-Pyrrole-2,5-dione, 1-(2-hydroxyethyl)-. Key properties include a melting point of 70-71ºC, a boiling point of 304.5±25.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 138.0±23.2 °C. It is classified under GHS with signal word Warning and hazard statements H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1585-90-6
Jingsj CID
J-30912-5
Molecular Formula
C6H7NO3
Chinese Name
N-(2-羟乙基)马来酰亚胺
Molecular Weight
141.12 g/mol
Category
Organic Bases
Last updated
8/21/2026

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Physicochemical Properties

Melting Point70-71ºC
Boiling Point304.5±25.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point138.0±23.2 °C
Exact Mass141.042587
PSA57.61000
LogP-0.81
Vapor Pressure0.0±1.4 mmHg at 25°C
Refractive Index1.561

GHS Safety & Compliance

IrritantSignal word: Warning
  • H319 — Causes serious eye irritation

Activity & Biological Data

Additional Information[1]. Scutaru AM, et al. Bivalent bendamustine and melphalan derivatives as anticancer agents. Eur J Med Chem. 2011 May;46(5):1604-15.

Customs & Trade Information

HS Code2925190090
Summary2925190090 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 N-(2-Hydroxyethyl)maleimide?

The CAS number of N-(2-Hydroxyethyl)maleimide is 1585-90-6.

What are the molecular formula and molecular weight of N-(2-Hydroxyethyl)maleimide?

N-(2-Hydroxyethyl)maleimide has molecular formula C6H7NO3 and molecular weight 141.12 g/mol.

Is N-(2-Hydroxyethyl)maleimide hazardous?

N-(2-Hydroxyethyl)maleimide has GHS signal word Warning and hazard statements H319 — Causes serious eye irritation.

What are the upstream and downstream products of N-(2-Hydroxyethyl)maleimide?

For N-(2-Hydroxyethyl)maleimide, Upstream Products: Methyl 2,5-dioxo-2,5-dihydro-1H-pyrrole-1-carboxylate, Ethanolamine, 1-(2-Hydroxyethyl)pyrrole; Downstream Products: 2,2-Bis(N-maleimidoethoxy)propane.

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

Last updated:

How to cite: Jingsj. "N-(2-Hydroxyethyl)maleimide (CAS 1585-90-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-30912-5 (accessed 2026-10-28).

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