4-Nitroisoxazole

Also known as: 4-Nitro-1,2-oxazole, 4-nitro-1,2-oxazole, ISOXAZOLE, 4-NITRO-, Isoxazole, 4-nitro-

4-Nitroisoxazole (CAS 1121-13-7) is a compound in the Nitrogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C3H2N2O3 and a molecular weight of 114.060 g/mol. Key properties include a boiling point of 243.5±13.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 101.1±19.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1121-13-7
Jingsj CID: J-11916-8
Molecular Formula: C₃H₂N₂O₃
Molecular Weight: 114.060 g/mol
Category: Nitrogen Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	243.5±13.0 °C at 760 mmHg
Density	1.5±0.1 g/cm3
Flash Point	101.1±19.8 °C
Exact Mass	114.006538
PSA	71.85000
LogP	-0.19
Vapor Pressure	0.1±0.5 mmHg at 25°C
Refractive Index	1.512

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 4-Nitroisoxazole?

The CAS number of 4-Nitroisoxazole is 1121-13-7.

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

4-Nitroisoxazole has molecular formula C3H2N2O3 and molecular weight 114.060 g/mol.

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

For 4-Nitroisoxazole, Upstream Products: Isoxazole; Downstream Products: Hydroxylamine, 4-Aminoisoxazole, Formic Acid.

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

Last updated: 8/21/2026

How to cite: Jingsj. "4-Nitroisoxazole (CAS 1121-13-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-11916-8 (accessed 2026-11-06).

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