![Molecular structure of Benzo[b]thiophene-3-acetic acid (CAS 1131-09-5)](/images/chem_structures_svg/036/1131-09-5.svg)
Benzo[b]thiophene-3-acetic acid
Also known as: 1-Benzothiophene-3-acetic acid, 2-(1-benzothiophen-3-yl)acetic acid, 2-(benzo[b]thiophen-3-yl)acetic acid, 3-Benzo[b]thienylacetic acid, 3-Benzo(b)thiopheneacetic acid, Benzothiophene-3-acetic acid, Thianaphthene-3-acetic acid, Acetic acid, 3-benzo(b)thienyl, NSC 18875, MFCD00051637, EINECS 214-461-2
Benzo[b]thiophene-3-acetic acid (CAS 1131-09-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H8O2S and a molecular weight of 192.234 g/mol. Key properties include a melting point of 82 °C, a boiling point of 378.7±17.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 182.9±20.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1131-09-5
- Jingsj CID
- J-3482-2
- Molecular Formula
- C10H8O2S
- Molecular Weight
- 192.234 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 82 °C |
|---|---|
| Boiling Point | 378.7±17.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 182.9±20.9 °C |
| Exact Mass | 192.024506 |
| PSA | 65.54000 |
| LogP | 3.67 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.688 |
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 Benzo[b]thiophene-3-acetic acid?
The CAS number of Benzo[b]thiophene-3-acetic acid is 1131-09-5.
What are the molecular formula and molecular weight of Benzo[b]thiophene-3-acetic acid?
Benzo[b]thiophene-3-acetic acid has molecular formula C10H8O2S and molecular weight 192.234 g/mol.
What are the upstream and downstream products of Benzo[b]thiophene-3-acetic acid?
For Benzo[b]thiophene-3-acetic acid, Upstream Products: Benzo[b]thiophene-3-acetonitrile, 2-Chloro-3-methylbenzo[b]thiophene, 1-Benzothiophene; Downstream Products: 3-Phenylbutyric acid, Methyl 2-(benzo[b]thiophen-3-yl)acetate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Benzo[b]thiophene-3-acetic acid (CAS 1131-09-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-3482-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.