4,5-Dimethyl-3H-1,3-oxazole-2-thione

4,5-二甲基-3H-1,3-噁唑-2-硫酮

Also known as: 2(3H)-Oxazolethione, 4,5-dimethyl-, 4,5-Dimethyloxazole-2-thiol, Dimethyl-1,3-oxazole-2-thiol, 4,5-Dimethyl-2(3H)-oxazolethione, 4,5-Dimethyloxazole-2(3H)-thione, 4,5-dimethyl-1,3-oxazol-2(3H)-thione, 4,5-dimethyl-1,3-oxazole-2-thiol, 4,5-dimethyl-2-thiono-4-oxazoline, 4,5-dimethyl-3H-oxazole-2-thione

4,5-Dimethyl-3H-1,3-oxazole-2-thione (CAS 6670-14-0) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H7NOS and a molecular weight of 129.18000 g/mol. It is also known as 2(3H)-Oxazolethione, 4,5-dimethyl-, 4,5-Dimethyloxazole-2-thiol and Dimethyl-1,3-oxazole-2-thiol. Key properties include a boiling point of 156.5ºC at 760 mmHg, a density of 1.23g/cm3 and a flash point of 48.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 6670-14-0
Jingsj CID: J-1495132-5
Molecular Formula: C₅H₇NOS
Chinese Name: 4,5-二甲基-3H-1,3-噁唑-2-硫酮
Molecular Weight: 129.18000 g/mol
Category: Ketones
Last updated: 8/21/2026

No offers for this compound yet.

Request a quote

Physicochemical Properties

Boiling Point	156.5ºC at 760 mmHg
Density	1.23g/cm3
Flash Point	48.4ºC

Frequently Asked Questions

What is the CAS number of 4,5-Dimethyl-3H-1,3-oxazole-2-thione?

The CAS number of 4,5-Dimethyl-3H-1,3-oxazole-2-thione is 6670-14-0.

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

4,5-Dimethyl-3H-1,3-oxazole-2-thione has molecular formula C5H7NOS and molecular weight 129.18000 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "4,5-Dimethyl-3H-1,3-oxazole-2-thione (CAS 6670-14-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1495132-5 (accessed 2026-10-25).

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