2,5-Dichloro-3-methylthiophene
2,5-二氯-3-甲基噻吩
Also known as: 2,5-Dichloro-3-methylthiophene, Thiophene, 2,5-dichloro-3-methyl-, 2,5-dichlor-3-methylthiophen, MFCD00022490, NSC 109398
2,5-Dichloro-3-methylthiophene (CAS 17249-90-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H4Cl2S and a molecular weight of 167.056 g/mol. It is also known as Thiophene, 2,5-dichloro-3-methyl-, 2,5-dichlor-3-methylthiophen and MFCD00022490. Key properties include a boiling point of 185.5±35.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 82.2±12.7 °C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 17249-90-0
- Jingsj CID
- J-23913-8
- Molecular Formula
- C5H4Cl2S
- Chinese Name
- 2,5-二氯-3-甲基噻吩
- Molecular Weight
- 167.056 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 185.5±35.0 °C at 760 mmHg |
|---|---|
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 82.2±12.7 °C |
GHS Safety & Compliance
Frequently Asked Questions
What is the CAS number of 2,5-Dichloro-3-methylthiophene?
The CAS number of 2,5-Dichloro-3-methylthiophene is 17249-90-0.
What are the molecular formula and molecular weight of 2,5-Dichloro-3-methylthiophene?
2,5-Dichloro-3-methylthiophene has molecular formula C5H4Cl2S and molecular weight 167.056 g/mol.
Is 2,5-Dichloro-3-methylthiophene hazardous?
2,5-Dichloro-3-methylthiophene has GHS signal word Danger.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2,5-Dichloro-3-methylthiophene (CAS 17249-90-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-23913-8 (accessed 2026-10-23).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.