![Molecular structure of 3-Methylbenzo[b]thiophene (CAS 1455-18-1)](/images/chem_structures_svg/241/1455-18-1.svg)
3-Methylbenzo[b]thiophene
Also known as: 3-METHYLBENZO[B]THIOPHENE, 3-METHYLTHIANAPHTHENE, 3-Methyl-1-benzothiophene, 3-Methylthioindene, 3-Methyl-1-thiaindene, 3-Methylbenzo(b)thiophene, 3-Methylbenzothiophene, 3-Methylthianaphthene, 3-methylbenzo[b]thiophene, 3MBBT, Benzo[b]thiophene, 3-methyl-, NSC267241
3-Methylbenzo[b]thiophene (CAS 1455-18-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H8S and a molecular weight of 148.225 g/mol. Key properties include a melting point of -40°C, a boiling point of 243.0±9.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 72.4±4.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1455-18-1
- Jingsj CID
- J-1012855-9
- Molecular Formula
- C9H8S
- Molecular Weight
- 148.225 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -40°C |
|---|---|
| Boiling Point | 243.0±9.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 72.4±4.9 °C |
| Exact Mass | 148.034668 |
| PSA | 28.24000 |
| LogP | 4.84 |
| Vapor Pressure | 0.1±0.5 mmHg at 25°C |
| Refractive Index | 1.652 |
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-Methylbenzo[b]thiophene?
The CAS number of 3-Methylbenzo[b]thiophene is 1455-18-1.
What are the molecular formula and molecular weight of 3-Methylbenzo[b]thiophene?
3-Methylbenzo[b]thiophene has molecular formula C9H8S and molecular weight 148.225 g/mol.
What are the upstream and downstream products of 3-Methylbenzo[b]thiophene?
For 3-Methylbenzo[b]thiophene, Upstream Products: 3-Methylbenzo[b]thiophene-2-carboxylic acid, 1-(Phenylthio)propan-2-one, 2-Iodoaniline; Downstream Products: 3-methyl-1-benzothiophene-2-carbonitrile, 3-Methylbenzo[b]thiophene-2-carboxylic acid, 2-acetyl-3-methylbenzo[b]thiophene.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Methylbenzo[b]thiophene (CAS 1455-18-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1012855-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.