4-Methoxythiophene-3-carboxylic acid
4-甲氧基噻吩-3-羧酸
Also known as: 4-Methoxy-3-thiophenecarboxylic acid, 3-Carboxy-4-methoxythiophene, 3-Thiophenecarboxylic acid, 4-methoxy-, 4-METHOXYTHIOPHENE-3-CARBOXYLIC ACID, 4-Methoxythiophene-3-carboxylic acid, 95+%
4-Methoxythiophene-3-carboxylic acid (CAS 71050-40-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H6O3S and a molecular weight of 158.17500 g/mol. It is also known as 4-Methoxy-3-thiophenecarboxylic acid, 3-Carboxy-4-methoxythiophene and 3-Thiophenecarboxylic acid, 4-methoxy-. Key properties include a melting point of 105ºC, a boiling point of 295.693ºC at 760 mmHg, a density of 1.37g/cm3 and a flash point of 132.631ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 71050-40-3
- Jingsj CID
- J-1138116-1
- Molecular Formula
- C6H6O3S
- Chinese Name
- 4-甲氧基噻吩-3-羧酸
- Molecular Weight
- 158.17500 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 105ºC |
|---|---|
| Boiling Point | 295.693ºC at 760 mmHg |
| Density | 1.37g/cm3 |
| Flash Point | 132.631ºC |
Frequently Asked Questions
What is the CAS number of 4-Methoxythiophene-3-carboxylic acid?
The CAS number of 4-Methoxythiophene-3-carboxylic acid is 71050-40-3.
What are the molecular formula and molecular weight of 4-Methoxythiophene-3-carboxylic acid?
4-Methoxythiophene-3-carboxylic acid has molecular formula C6H6O3S and molecular weight 158.17500 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Methoxythiophene-3-carboxylic acid (CAS 71050-40-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1138116-1 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.