3,4-dimethyl-2H-1,2-oxazol-5-one

3,4-二甲基异噁唑-5(2H)-酮

Also known as: 3,4-Dimethyl-5-hydroxyisoxazole, 3,4-Dimethyl-5-isoxazolol, 3,4-Dimethylisoxazolin-5-one, 3,4-Dimethylisoxazol-5(4H)-one, 3,4-Dimethyl-1,2-oxazol-5(2H)-one

3,4-dimethyl-2H-1,2-oxazol-5-one (CAS 18655-21-5) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H7NO2 and a molecular weight of 113.11500 g/mol. It is also known as 3,4-Dimethyl-5-hydroxyisoxazole, 3,4-Dimethyl-5-isoxazolol and 3,4-Dimethylisoxazolin-5-one. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 18655-21-5
Jingsj CID: J-993543-3
Molecular Formula: C₅H₇NO₂
Chinese Name: 3,4-二甲基异噁唑-5(2H)-酮
Molecular Weight: 113.11500 g/mol
Category: Ketones
Last updated: 8/21/2026

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Frequently Asked Questions

What is the CAS number of 3,4-dimethyl-2H-1,2-oxazol-5-one?

The CAS number of 3,4-dimethyl-2H-1,2-oxazol-5-one is 18655-21-5.

What are the molecular formula and molecular weight of 3,4-dimethyl-2H-1,2-oxazol-5-one?

3,4-dimethyl-2H-1,2-oxazol-5-one has molecular formula C5H7NO2 and molecular weight 113.11500 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "3,4-dimethyl-2H-1,2-oxazol-5-one (CAS 18655-21-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-993543-3 (accessed 2026-10-24).

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