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3,5-Dimethyl-4-nitroisoxazole

Also known as: 4-nitro-3,5-dimethylisoxazole, Isoxazole, 3,5-dimethyl-4-nitro-, 3,5-Dimethyl-4-nitro-1,2-oxazole, MFCD00051656, NSC 93420

3,5-Dimethyl-4-nitroisoxazole (CAS 1123-49-5) is a compound in the Nitrogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C5H6N2O3 and a molecular weight of 142.113 g/mol. Key properties include a melting point of 67-69ºC(lit.), a boiling point of 241.4±35.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 99.8±25.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1123-49-5
Jingsj CID
J-1329601-0
Molecular Formula
C5H6N2O3
Molecular Weight
142.113 g/mol
Category
Nitrogen Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point67-69ºC(lit.)
Boiling Point241.4±35.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point99.8±25.9 °C
Exact Mass142.037842
PSA71.85000
LogP0.73
Vapor Pressure0.1±0.5 mmHg at 25°C
Refractive Index1.510

Frequently Asked Questions

What is the CAS number of 3,5-Dimethyl-4-nitroisoxazole?

The CAS number of 3,5-Dimethyl-4-nitroisoxazole is 1123-49-5.

What are the molecular formula and molecular weight of 3,5-Dimethyl-4-nitroisoxazole?

3,5-Dimethyl-4-nitroisoxazole has molecular formula C5H6N2O3 and molecular weight 142.113 g/mol.

What are the upstream and downstream products of 3,5-Dimethyl-4-nitroisoxazole?

For 3,5-Dimethyl-4-nitroisoxazole, Upstream Products: 3,5-Dimethylisoxazole, Diazomethane, 2,4-Pentanedione; Downstream Products: 3-(4-Chlorophenyl)glutaric acid, 3,5-Dimethyl-4-isoxazolamine, 3-Phenylglutaric acid.

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

Last updated:

How to cite: Jingsj. "3,5-Dimethyl-4-nitroisoxazole (CAS 1123-49-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1329601-0 (accessed 2026-11-09).

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