5-chloro-3-methyl-1-benzothiophene
5-氯-3-甲基苯并噻吩
Also known as: 5-chloro-3-methylbenzo[b]thiophene, 5-chloro-3-methylbenzothiophene, 5-chloro-3-methylthianaphthene, NSC 248678, MFCD00052506
5-chloro-3-methyl-1-benzothiophene (CAS 19404-18-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H7ClS and a molecular weight of 182.670 g/mol. It is also known as 5-chloro-3-methylbenzo[b]thiophene, 5-chloro-3-methylbenzothiophene and 5-chloro-3-methylthianaphthene. Key properties include a melting point of 33 °C, a boiling point of 280.5±20.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 163.1±8.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 19404-18-3
- Jingsj CID
- J-1494868-0
- Molecular Formula
- C9H7ClS
- Chinese Name
- 5-氯-3-甲基苯并噻吩
- Molecular Weight
- 182.670 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 33 °C |
|---|---|
| Boiling Point | 280.5±20.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 163.1±8.5 °C |
| Exact Mass | 181.995697 |
| PSA | 28.24000 |
| LogP | 5.43 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.661 |
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 5-chloro-3-methyl-1-benzothiophene?
The CAS number of 5-chloro-3-methyl-1-benzothiophene is 19404-18-3.
What are the molecular formula and molecular weight of 5-chloro-3-methyl-1-benzothiophene?
5-chloro-3-methyl-1-benzothiophene has molecular formula C9H7ClS and molecular weight 182.670 g/mol.
What are the upstream and downstream products of 5-chloro-3-methyl-1-benzothiophene?
For 5-chloro-3-methyl-1-benzothiophene, Upstream Products: 1-[(4-chlorophenyl)thio]propan-2-one, 4-Chlorothiophenol, benzene; Downstream Products: 3-(Bromomethyl)-5-chlorobenzo[b]thiophene, 5-Chloro-1-benzothiophene-3-carbaldehyde.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "5-chloro-3-methyl-1-benzothiophene (CAS 19404-18-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1494868-0 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.