2-Methylthiophene-3-carboxylic acid
Also known as: 2-Methyl-3-thenoic acid, 2-Methyl-3-thiophenecarboxylic acid, 2-Methyl-thiophen-3-carbonsaeure, 2-methyl-3-thiophene carboxylic acid, 2-methyl-thiophene-3-carboxylic acid, 2-methylthiophene carboxylic acid, 2-methylthiophene-3-carboxylic acid, 3-Carboxy-2-methylthiophene, 3-Thiophenecarboxylic acid, 2-methyl-
2-Methylthiophene-3-carboxylic acid (CAS 1918-78-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H6O2S and a molecular weight of 142.176 g/mol. Key properties include a boiling point of 271.5±20.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 118.0±21.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1918-78-1
- Jingsj CID
- J-995985-7
- Molecular Formula
- C6H6O2S
- Molecular Weight
- 142.176 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 271.5±20.0 °C at 760 mmHg |
|---|---|
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 118.0±21.8 °C |
| Exact Mass | 142.008850 |
| PSA | 65.54000 |
| LogP | 1.96 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.591 |
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 2-Methylthiophene-3-carboxylic acid?
The CAS number of 2-Methylthiophene-3-carboxylic acid is 1918-78-1.
What are the molecular formula and molecular weight of 2-Methylthiophene-3-carboxylic acid?
2-Methylthiophene-3-carboxylic acid has molecular formula C6H6O2S and molecular weight 142.176 g/mol.
What are the upstream and downstream products of 2-Methylthiophene-3-carboxylic acid?
For 2-Methylthiophene-3-carboxylic acid, Upstream Products: Thiophene-3-carboxylic acid, iodomethane, Ethyl 2-methylthiophene-3-carboxylate; Downstream Products: 2-Methylthiophene-3-carbaldehyde, Methyl 2-methyl-3-thiophenecarboxylate, Thiophene-2,3-dicarboxylic acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-Methylthiophene-3-carboxylic acid (CAS 1918-78-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-995985-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.