5-Acetylthiophene-2-carboxylic acid
Also known as: 5-Acetyl-2-thiophenecarboxylic acid, 2-Thiophenecarboxylic acid, 5-acetyl-, 2-acetyl-5-thiophenecarboxylic acid, 5-ACETYL-2-THIOPHENECARBOXYLIC ACID, 5-Acetyl-thiophen-2-carbonsaeure, 5-Acetyl-thiophene-2-carboxylic acid, 5-Acetylthiophene-2-Carboxylic, 5-Acetyltiophene-2-carboxylic acid, 5-carboxy-2-acetylthiophene, AKOS MSC-0226, BUTTPARK 121\06-15, FD7379, LABOTEST-BB LT00454683, MFCD00055512
5-Acetylthiophene-2-carboxylic acid (CAS 4066-41-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H6O3S and a molecular weight of 170.186 g/mol. Key properties include a melting point of 210-212°C, a boiling point of 385.2±27.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 186.8±23.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 4066-41-5
- Jingsj CID
- J-1312960-7
- Molecular Formula
- C7H6O3S
- Molecular Weight
- 170.186 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 210-212°C |
|---|---|
| Boiling Point | 385.2±27.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 186.8±23.7 °C |
| Exact Mass | 170.003769 |
| PSA | 82.61000 |
| LogP | 1.15 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.592 |
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-Acetylthiophene-2-carboxylic acid?
The CAS number of 5-Acetylthiophene-2-carboxylic acid is 4066-41-5.
What are the molecular formula and molecular weight of 5-Acetylthiophene-2-carboxylic acid?
5-Acetylthiophene-2-carboxylic acid has molecular formula C7H6O3S and molecular weight 170.186 g/mol.
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-Acetylthiophene-2-carboxylic acid (CAS 4066-41-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1312960-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.