2-ethyl-3-methylmaleimide
3-乙基-4-甲基吡咯-2,5-二酮
Also known as: 1H-Pyrrole-2,5-dione, 3-ethyl-4-methyl-, 3-ethyl-4-methylpyrrole-2,5-dione, 3-ethyl-4-methyl-1H-pyrrole-2,5-dione, 3-Methyl-4-ethyl-1H-pyrrole-2,5-dione, 2-Methyl-3-ethylmaleimide, Methylethylmaleimide, Ethylmethylmaleimide, Maleimide, 2-ethyl-3-methyl, 3-Ethyl-4-methyl-3-pyrroline-2,5-dione
2-ethyl-3-methylmaleimide (CAS 20189-42-8) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C7H9NO2 and a molecular weight of 139.152 g/mol. It is also known as 1H-Pyrrole-2,5-dione, 3-ethyl-4-methyl-, 3-ethyl-4-methylpyrrole-2,5-dione and 3-ethyl-4-methyl-1H-pyrrole-2,5-dione. Key properties include a boiling point of 253.8±9.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 119.3±18.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 20189-42-8
- Jingsj CID
- J-42572-0
- Molecular Formula
- C7H9NO2
- Chinese Name
- 3-乙基-4-甲基吡咯-2,5-二酮
- Molecular Weight
- 139.152 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 253.8±9.0 °C at 760 mmHg |
|---|---|
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 119.3±18.9 °C |
Frequently Asked Questions
What is the CAS number of 2-ethyl-3-methylmaleimide?
The CAS number of 2-ethyl-3-methylmaleimide is 20189-42-8.
What are the molecular formula and molecular weight of 2-ethyl-3-methylmaleimide?
2-ethyl-3-methylmaleimide has molecular formula C7H9NO2 and molecular weight 139.152 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-ethyl-3-methylmaleimide (CAS 20189-42-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-42572-0 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.