5-Ethylthiophene-3-carboxylic acid
Also known as: 5-Ethyl-3-thiophenecarboxylic acid, 5-Ethyl-thiophene-3-carboxylic acid, 5-ethyl-3-thenoic acid, 5-ethyl-3-thiophenecarboxylic acid (SALTDATA: FREE), 5-ethylthiophene-3-carboxylic acid (SALTDATA: FREE), AKOS B007503, AKOS MSC-0500, CHEMBRDG-BB 3007503, 3-Thiophenecarboxylic acid, 5-ethyl-, 5-Aethyl-thiophen-3-carbonsaeure
5-Ethylthiophene-3-carboxylic acid (CAS 19156-51-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H8O2S and a molecular weight of 156.202 g/mol. Key properties include a boiling point of 286.1±28.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 126.8±24.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 19156-51-5
- Jingsj CID
- J-1414389-6
- Molecular Formula
- C7H8O2S
- Molecular Weight
- 156.202 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 286.1±28.0 °C at 760 mmHg |
|---|---|
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 126.8±24.0 °C |
| Exact Mass | 156.024506 |
| PSA | 65.54000 |
| LogP | 2.49 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.576 |
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-Ethylthiophene-3-carboxylic acid?
The CAS number of 5-Ethylthiophene-3-carboxylic acid is 19156-51-5.
What are the molecular formula and molecular weight of 5-Ethylthiophene-3-carboxylic acid?
5-Ethylthiophene-3-carboxylic acid has molecular formula C7H8O2S and molecular weight 156.202 g/mol.
What are the upstream and downstream products of 5-Ethylthiophene-3-carboxylic acid?
For 5-Ethylthiophene-3-carboxylic acid, Upstream Products: Ethyl thiophene-3-carboxylate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "5-Ethylthiophene-3-carboxylic acid (CAS 19156-51-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1414389-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.