5-ethyl-4-methylthiophene-2-carboxylic acid

5-乙基-4-甲基噻吩-2-羧酸

Also known as: 5-ETHYL-4-METHYLTHIOPHENE-2-CARBOXYLIC ACID, 2-Thiophenecarboxylic acid, 5-ethyl-4-methyl-, 5-ETHYL-4-METHYL-THIOPHENE-2-CARBOXYLIC ACID, 5-Ethyl-4-methyl-thiophene-2-carboxylic acid, HMS1697M01, AKOS000303343, G25938, EN300-07617, MFCD06654975, DTXSID90397375, DB-368697, CS-0452343, Z90123545

5-ethyl-4-methylthiophene-2-carboxylic acid (CAS 40808-25-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H10O2S and a molecular weight of 170.22900 g/mol. It is also known as 5-ETHYL-4-METHYLTHIOPHENE-2-CARBOXYLIC ACID, 2-Thiophenecarboxylic acid, 5-ethyl-4-methyl- and 5-ETHYL-4-METHYL-THIOPHENE-2-CARBOXYLIC ACID. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 40808-25-1
Jingsj CID: J-1073606-3
Molecular Formula: C₈H₁₀O₂S
Chinese Name: 5-乙基-4-甲基噻吩-2-羧酸
Molecular Weight: 170.22900 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

No offers for this compound yet.

Request a quote

Frequently Asked Questions

What is the CAS number of 5-ethyl-4-methylthiophene-2-carboxylic acid?

The CAS number of 5-ethyl-4-methylthiophene-2-carboxylic acid is 40808-25-1.

What are the molecular formula and molecular weight of 5-ethyl-4-methylthiophene-2-carboxylic acid?

5-ethyl-4-methylthiophene-2-carboxylic acid has molecular formula C8H10O2S and molecular weight 170.22900 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "5-ethyl-4-methylthiophene-2-carboxylic acid (CAS 40808-25-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1073606-3 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.