1-(4,5-dimethylthiophen-2-yl)ethanone
1-(4,5-二甲基-2-噻吩基)乙酮
Also known as: 2-acetyl-4,5-dimethylthiophene, 5-acetyl-2,3-dimethylthiophene, 1-(4,5-dimethyl-2-thienyl)ethanone, 4,5-dimethyl-2-acetothienone
1-(4,5-dimethylthiophen-2-yl)ethanone (CAS 66587-69-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H10OS and a molecular weight of 154.22900 g/mol. It is also known as 2-acetyl-4,5-dimethylthiophene, 5-acetyl-2,3-dimethylthiophene and 1-(4,5-dimethyl-2-thienyl)ethanone. Key properties include a boiling point of 262.8ºC at 760 mmHg, a density of 1.078g/cm3 and a flash point of 112.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 66587-69-7
- Jingsj CID
- J-908586-6
- Molecular Formula
- C8H10OS
- Chinese Name
- 1-(4,5-二甲基-2-噻吩基)乙酮
- Molecular Weight
- 154.22900 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 262.8ºC at 760 mmHg |
|---|---|
| Density | 1.078g/cm3 |
| Flash Point | 112.7ºC |
Frequently Asked Questions
What is the CAS number of 1-(4,5-dimethylthiophen-2-yl)ethanone?
The CAS number of 1-(4,5-dimethylthiophen-2-yl)ethanone is 66587-69-7.
What are the molecular formula and molecular weight of 1-(4,5-dimethylthiophen-2-yl)ethanone?
1-(4,5-dimethylthiophen-2-yl)ethanone has molecular formula C8H10OS and molecular weight 154.22900 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-(4,5-dimethylthiophen-2-yl)ethanone (CAS 66587-69-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-908586-6 (accessed 2026-10-24).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.