2-(Methylthio)-4(5H)-thiazolone
2-(甲硫基)-1,3-噻唑-4(5H)-酮
Also known as: 4(5H)-Thiazolone, 2-(methylthio)-, 2-(Methylsulfanyl)-1,3-thiazol-4(5H)-one, 2-(methylsulfanyl)-4,5-dihydro-1,3-thiazol-4-one, 2-(methylthio)thiazol-4(5H)-one, 2-methylsulfanyl-thiazol-4-one, 4(5H)-Thiazolone,2-(methylthio)-(9CI)
2-(Methylthio)-4(5H)-thiazolone (CAS 20949-66-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H5NOS2 and a molecular weight of 147.21900 g/mol. It is also known as 4(5H)-Thiazolone, 2-(methylthio)-, 2-(Methylsulfanyl)-1,3-thiazol-4(5H)-one and 2-(methylsulfanyl)-4,5-dihydro-1,3-thiazol-4-one. Key properties include a melting point of 82ºC, a boiling point of 249ºC, a density of 1.49 and a flash point of 105ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 20949-66-0
- Jingsj CID
- J-1386925-4
- Molecular Formula
- C4H5NOS2
- Chinese Name
- 2-(甲硫基)-1,3-噻唑-4(5H)-酮
- Molecular Weight
- 147.21900 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 82ºC |
|---|---|
| Boiling Point | 249ºC |
| Density | 1.49 |
| Flash Point | 105ºC |
Frequently Asked Questions
What is the CAS number of 2-(Methylthio)-4(5H)-thiazolone?
The CAS number of 2-(Methylthio)-4(5H)-thiazolone is 20949-66-0.
What are the molecular formula and molecular weight of 2-(Methylthio)-4(5H)-thiazolone?
2-(Methylthio)-4(5H)-thiazolone has molecular formula C4H5NOS2 and molecular weight 147.21900 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-(Methylthio)-4(5H)-thiazolone (CAS 20949-66-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1386925-4 (accessed 2026-10-24).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.