![Molecular structure of Benzo[b]thiophene-2-carboxaldehyde (CAS 3541-37-5)](/images/chem_structures_svg/286/3541-37-5.svg)
Benzo[b]thiophene-2-carboxaldehyde
Also known as: 2-Formylbenzo[b]thiophene, 1-Benzothiophene-2-carbaldehyde, Benzothiophene-2-carboxaldehyde, Thianaphthene-2-carboxaldehyde
Benzo[b]thiophene-2-carboxaldehyde (CAS 3541-37-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H6OS and a molecular weight of 162.208 g/mol. Key properties include a melting point of 30-32°C, a boiling point of 303.2±15.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 137.2±20.4 °C. It is classified under GHS with signal word Warning and hazard statements H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3541-37-5
- Jingsj CID
- J-1125328-4
- Molecular Formula
- C9H6OS
- Molecular Weight
- 162.208 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 30-32°C |
|---|---|
| Boiling Point | 303.2±15.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 137.2±20.4 °C |
| Exact Mass | 162.013931 |
| PSA | 45.31000 |
| LogP | 3.72 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.720 |
GHS Safety & Compliance
- H319 — Causes serious eye irritation
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-2-carboxaldehyde?
The CAS number of Benzo[b]thiophene-2-carboxaldehyde is 3541-37-5.
What are the molecular formula and molecular weight of Benzo[b]thiophene-2-carboxaldehyde?
Benzo[b]thiophene-2-carboxaldehyde has molecular formula C9H6OS and molecular weight 162.208 g/mol.
Is Benzo[b]thiophene-2-carboxaldehyde hazardous?
Benzo[b]thiophene-2-carboxaldehyde has GHS signal word Warning and hazard statements H319 — Causes serious eye irritation.
What are the upstream and downstream products of Benzo[b]thiophene-2-carboxaldehyde?
For Benzo[b]thiophene-2-carboxaldehyde, Upstream Products: N,N-Dimethylformamide, 1-Benzothiophene, Benzo[b]thiophene-2-methanol; Downstream Products: 2-(Chloromethyl)benzo[b]thiophene, 3-bromobenzothiophene-2-carboxylic acid, Benzothiophene-2-carbonitrile.
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-2-carboxaldehyde (CAS 3541-37-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1125328-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.