3,4-Dimethyl-1,2,5-oxadiazole

Also known as: 3,4-Dimethylfurazan, Dimethylfurazan, dimethyl-1,2,5-oxadiazole, 1,2,5-Oxadiazole, 3,4-dimethyl-, Furazan, 3,4-dimethyl-

3,4-Dimethyl-1,2,5-oxadiazole (CAS 4975-21-7) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C4H6N2O and a molecular weight of 98.10320 g/mol. Key properties include a boiling point of 132.9ºC at 760mmHg, a density of 1.075g/cm3 and a flash point of 35.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 4975-21-7
Jingsj CID: J-1180678-3
Molecular Formula: C₄H₆N₂O
Molecular Weight: 98.10320 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	132.9ºC at 760mmHg
Density	1.075g/cm3
Flash Point	35.5ºC
Exact Mass	98.04800
PSA	38.92000
LogP	0.68640
Refractive Index	1.447

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 3,4-Dimethyl-1,2,5-oxadiazole?

The CAS number of 3,4-Dimethyl-1,2,5-oxadiazole is 4975-21-7.

What are the molecular formula and molecular weight of 3,4-Dimethyl-1,2,5-oxadiazole?

3,4-Dimethyl-1,2,5-oxadiazole has molecular formula C4H6N2O and molecular weight 98.10320 g/mol.

What are the upstream and downstream products of 3,4-Dimethyl-1,2,5-oxadiazole?

For 3,4-Dimethyl-1,2,5-oxadiazole, Upstream Products: Dimethylglyoxime, Succinic anhydride, Ammonia; Downstream Products: 4-methyl-1,2,5-oxadiazole-3-carboxylic acid, (4-Methyl-furazan-3-yl)-acetic acid, 3,4-bis(chloromethyl)-1,2,5-oxadiazole.

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. "3,4-Dimethyl-1,2,5-oxadiazole (CAS 4975-21-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1180678-3 (accessed 2026-11-09).

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