4-Acetyl-5-methyl-2-vinylimidazole

4-乙酰基-5-甲基-2-乙烯基咪唑

Also known as: 1-(2-ethenyl-5-methyl-1H-imidazol-4-yl)ethan-1-one, 1-(5-methyl-2-vinyl-1H-imidazol-4-yl)ethanone, Ethanone, 1-(2-ethenyl-5-methyl-1H-imidazol-4-yl)- (9CI)

4-Acetyl-5-methyl-2-vinylimidazole (CAS 99378-21-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H12N2O and a molecular weight of 152.19400 g/mol. It is also known as 1-(2-ethenyl-5-methyl-1H-imidazol-4-yl)ethan-1-one, 1-(5-methyl-2-vinyl-1H-imidazol-4-yl)ethanone and Ethanone, 1-(2-ethenyl-5-methyl-1H-imidazol-4-yl)- (9CI). Key properties include a boiling point of 278.5ºC at 760 mmHg, a density of 1.07g/cm3 and a flash point of 123.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
99378-21-9
Jingsj CID
J-1470846-0
Molecular Formula
C8H12N2O
Chinese Name
4-乙酰基-5-甲基-2-乙烯基咪唑
Molecular Weight
152.19400 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point278.5ºC at 760 mmHg
Density1.07g/cm3
Flash Point123.9ºC

Frequently Asked Questions

What is the CAS number of 4-Acetyl-5-methyl-2-vinylimidazole?

The CAS number of 4-Acetyl-5-methyl-2-vinylimidazole is 99378-21-9.

What are the molecular formula and molecular weight of 4-Acetyl-5-methyl-2-vinylimidazole?

4-Acetyl-5-methyl-2-vinylimidazole has molecular formula C8H12N2O and molecular weight 152.19400 g/mol.

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

Last updated:

How to cite: Jingsj. "4-Acetyl-5-methyl-2-vinylimidazole (CAS 99378-21-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1470846-0 (accessed 2026-10-25).

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