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4-Methylisoxazole

Also known as: 4-methyl-1,2-oxazole, Isoxazole, 4-methyl-

4-Methylisoxazole (CAS 6454-84-8) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C4H5NO and a molecular weight of 83.08860 g/mol. Key properties include a boiling point of 123.898ºC at 760 mmHg, a density of 1.017g/cm3 and a flash point of 26.745ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
6454-84-8
Jingsj CID
J-1328223-0
Molecular Formula
C4H5NO
Molecular Weight
83.08860 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point123.898ºC at 760 mmHg
Density1.017g/cm3
Flash Point26.745ºC
Exact Mass83.03710
PSA26.03000
LogP0.98300
Refractive Index1.438

Frequently Asked Questions

What is the CAS number of 4-Methylisoxazole?

The CAS number of 4-Methylisoxazole is 6454-84-8.

What are the molecular formula and molecular weight of 4-Methylisoxazole?

4-Methylisoxazole has molecular formula C4H5NO and molecular weight 83.08860 g/mol.

What are the upstream and downstream products of 4-Methylisoxazole?

For 4-Methylisoxazole, Upstream Products: 1,1,3,3-Tetraethoxy-2-methylpropane; Downstream Products: 2-Formylpropiononitrile, 4-(Bromomethyl)isoxazole.

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

Last updated:

How to cite: Jingsj. "4-Methylisoxazole (CAS 6454-84-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1328223-0 (accessed 2026-11-09).

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