1-(Isothiazol-5-yl)ethanone
1-(异噻唑-5-基)乙-1-酮
Also known as: 1-(5-isothiazolyl)Ethanone, Ethanone, 1-(5-isothiazolyl)-, 1-(Isothiazol-5-yl)ethan-1-one, 1-Isothiazol-5-yl-ethanone, 4-ISOTHIAZOL-5-YL-ETHANONE, 5-Acetyl-isothiazol, 5-acetyl-isothiazole, Isothiazolyl-(5)-methylketon, 1-(1,2-thiazol-5-yl)ethanone
1-(Isothiazol-5-yl)ethanone (CAS 3684-00-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5NOS and a molecular weight of 127.16400 g/mol. It is also known as 1-(5-isothiazolyl)Ethanone, Ethanone, 1-(5-isothiazolyl)- and 1-(Isothiazol-5-yl)ethan-1-one. Key properties include a boiling point of 117.4ºC at 760mmHg, a density of 1.226g/cm3 and a flash point of 24.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3684-00-2
- Jingsj CID
- J-1359289-7
- Molecular Formula
- C5H5NOS
- Chinese Name
- 1-(异噻唑-5-基)乙-1-酮
- Molecular Weight
- 127.16400 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 117.4ºC at 760mmHg |
|---|---|
| Density | 1.226g/cm3 |
| Flash Point | 24.8ºC |
Frequently Asked Questions
What is the CAS number of 1-(Isothiazol-5-yl)ethanone?
The CAS number of 1-(Isothiazol-5-yl)ethanone is 3684-00-2.
What are the molecular formula and molecular weight of 1-(Isothiazol-5-yl)ethanone?
1-(Isothiazol-5-yl)ethanone has molecular formula C5H5NOS and molecular weight 127.16400 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-(Isothiazol-5-yl)ethanone (CAS 3684-00-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1359289-7 (accessed 2026-10-24).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.