3-Amino-4,5-dimethylisoxazole

3-氨基-4,5-二甲基异噁唑

Also known as: 4,5-Dimethylisoxazol-3-amine, 4,5-Dimethyl-1,2-oxazol-3-amine, 4,5-Dimethyl-3-aminoisoxazole, 3-Isoxazolamine, 4,5-dimethyl-, 4,5-dimethyl-3-isoxazolamine

3-Amino-4,5-dimethylisoxazole (CAS 13999-39-8) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C5H8N2O and a molecular weight of 112.130 g/mol. It is also known as 4,5-Dimethylisoxazol-3-amine, 4,5-Dimethyl-1,2-oxazol-3-amine and 4,5-Dimethyl-3-aminoisoxazole. Key properties include a boiling point of 250.0±35.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 105.0±25.9 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
13999-39-8
Jingsj CID
J-1515959-5
Molecular Formula
C5H8N2O
Chinese Name
3-氨基-4,5-二甲基异噁唑
Molecular Weight
112.130 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point250.0±35.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point105.0±25.9 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 3-Amino-4,5-dimethylisoxazole?

The CAS number of 3-Amino-4,5-dimethylisoxazole is 13999-39-8.

What are the molecular formula and molecular weight of 3-Amino-4,5-dimethylisoxazole?

3-Amino-4,5-dimethylisoxazole has molecular formula C5H8N2O and molecular weight 112.130 g/mol.

Is 3-Amino-4,5-dimethylisoxazole hazardous?

3-Amino-4,5-dimethylisoxazole has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "3-Amino-4,5-dimethylisoxazole (CAS 13999-39-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1515959-5 (accessed 2026-10-25).

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