3-Chlorobenzo[b]thiophene-2-carbonyl chloride
3-氯苯并[b]噻吩-2-羰酰氯
Also known as: 3-Chloro-1-benzothiophene-2-carbonyl chloride, 3-Chlorobenzothiophene-2-carbonyl chloride, Benzo[b]thiophene-2-carbonyl chloride, 3-chloro-, MFCD00053069
3-Chlorobenzo[b]thiophene-2-carbonyl chloride (CAS 21815-91-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H4Cl2OS and a molecular weight of 231.098 g/mol. It is also known as 3-Chloro-1-benzothiophene-2-carbonyl chloride, 3-Chlorobenzothiophene-2-carbonyl chloride and Benzo[b]thiophene-2-carbonyl chloride, 3-chloro-. Key properties include a melting point of 112-116 °C, a boiling point of 342.2±22.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 160.7±22.3 °C. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 21815-91-8
- Jingsj CID
- J-1394845-4
- Molecular Formula
- C9H4Cl2OS
- Chinese Name
- 3-氯苯并[b]噻吩-2-羰酰氯
- Molecular Weight
- 231.098 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 112-116 °C |
|---|---|
| Boiling Point | 342.2±22.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 160.7±22.3 °C |
| Exact Mass | 229.935989 |
| PSA | 45.31000 |
| LogP | 4.47 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.686 |
GHS Safety & Compliance
- H314 — Causes severe skin burns and eye damage
Customs & Trade Information
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 3-Chlorobenzo[b]thiophene-2-carbonyl chloride?
The CAS number of 3-Chlorobenzo[b]thiophene-2-carbonyl chloride is 21815-91-8.
What are the molecular formula and molecular weight of 3-Chlorobenzo[b]thiophene-2-carbonyl chloride?
3-Chlorobenzo[b]thiophene-2-carbonyl chloride has molecular formula C9H4Cl2OS and molecular weight 231.098 g/mol.
Is 3-Chlorobenzo[b]thiophene-2-carbonyl chloride hazardous?
3-Chlorobenzo[b]thiophene-2-carbonyl chloride has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Chlorobenzo[b]thiophene-2-carbonyl chloride (CAS 21815-91-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1394845-4 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.