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. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. 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
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 250.0±35.0 °C at 760 mmHg |
|---|---|
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 105.0±25.9 °C |
| Exact Mass | 112.063660 |
| PSA | 52.05000 |
| LogP | -0.28 |
| Vapor Pressure | 0.0±0.5 mmHg at 25°C |
| Refractive Index | 1.521 |
| Storage Conditions | 2-8°C |
GHS Safety & Compliance
- H302 — Harmful if swallowed
Customs & Trade Information
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
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 and hazard statements H302 — Harmful if swallowed.
What are the upstream and downstream products of 3-Amino-4,5-dimethylisoxazole?
For 3-Amino-4,5-dimethylisoxazole, Upstream Products: tert-Butyl (4,5-dimethylisoxazol-3-yl)carbamate; Downstream Products: Sulfatroxazole.
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 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.