4,5-Dimethylthiophene-2-carboxylic acid
Also known as: 2,3-Dimethylthiophene-5-carboxylic acid, 4,5-Dimethyl-2-thiophenecarboxylic acid, 4,5-Dimethylthiophene-2-carboxylic acid, 2-Thiophenecarboxylic acid, 4,5-dimethyl-, AKOS B020860, ART-CHEM-BB B020860, IFLAB-BB F2124-0595, MFCD00512748, RARECHEM AL BE 0647, TIMTEC-BB SBB009532
4,5-Dimethylthiophene-2-carboxylic acid (CAS 40808-24-0) 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 156.20200 g/mol. Key properties include a melting point of 206-211°C, a boiling point of 290.6ºC at 760 mmHg, a density of 1.259 g/cm3 and a flash point of 129.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 40808-24-0
- Jingsj CID
- J-48065-9
- Molecular Formula
- C7H8O2S
- Molecular Weight
- 156.20200 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 206-211°C |
|---|---|
| Boiling Point | 290.6ºC at 760 mmHg |
| Density | 1.259 g/cm3 |
| Flash Point | 129.5ºC |
| Exact Mass | 156.02500 |
| PSA | 65.54000 |
| LogP | 2.06310 |
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 4,5-Dimethylthiophene-2-carboxylic acid?
The CAS number of 4,5-Dimethylthiophene-2-carboxylic acid is 40808-24-0.
What are the molecular formula and molecular weight of 4,5-Dimethylthiophene-2-carboxylic acid?
4,5-Dimethylthiophene-2-carboxylic acid has molecular formula C7H8O2S and molecular weight 156.20200 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. "4,5-Dimethylthiophene-2-carboxylic acid (CAS 40808-24-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48065-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.