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3-Methyl-5-(methylthio)-4-vinylthiophene-2-carboxylic acid

3-甲基-5-(甲硫基)-4-乙烯基噻吩-2-羧酸

Also known as: 3-METHYL-5-METHYLSULFANYL-4-VINYLTHIOPHENE-2-CARBOXYLIC ACID, 3-METHYL-5-(METHYLTHIO)-4-VINYLTHIOPHENE-2-CARBOXYLIC ACID, 4-ETHENYL-3-METHYL-5-(METHYLTHIO)THIOPHENE-2-CARBOXYLIC ACID, 3-Methyl-5-methylsulfanyl-4-vinylthiophene-2-carboxylic acid, 4-ethenyl-3-methyl-5-methylsulfanylthiophene-2-carboxylic acid, 2-Thiophenecarboxylic acid, 4-ethenyl-3-methyl-5-(methylthio)-, BUTTPARK 94\04-58, HMS554H16

3-Methyl-5-(methylthio)-4-vinylthiophene-2-carboxylic acid (CAS 175202-63-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H10O2S2 and a molecular weight of 214.30400 g/mol. It is also known as 3-METHYL-5-METHYLSULFANYL-4-VINYLTHIOPHENE-2-CARBOXYLIC ACID, 3-METHYL-5-(METHYLTHIO)-4-VINYLTHIOPHENE-2-CARBOXYLIC ACID and 4-ETHENYL-3-METHYL-5-(METHYLTHIO)THIOPHENE-2-CARBOXYLIC ACID. Key properties include a melting point of 172ºC, a boiling point of 353.1ºC at 760 mmHg, a density of 1.29g/cm3 and a flash point of 167.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
175202-63-8
Jingsj CID
J-1138205-0
Molecular Formula
C9H10O2S2
Chinese Name
3-甲基-5-(甲硫基)-4-乙烯基噻吩-2-羧酸
Molecular Weight
214.30400 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point172ºC
Boiling Point353.1ºC at 760 mmHg
Density1.29g/cm3
Flash Point167.4ºC

Frequently Asked Questions

What is the CAS number of 3-Methyl-5-(methylthio)-4-vinylthiophene-2-carboxylic acid?

The CAS number of 3-Methyl-5-(methylthio)-4-vinylthiophene-2-carboxylic acid is 175202-63-8.

What are the molecular formula and molecular weight of 3-Methyl-5-(methylthio)-4-vinylthiophene-2-carboxylic acid?

3-Methyl-5-(methylthio)-4-vinylthiophene-2-carboxylic acid has molecular formula C9H10O2S2 and molecular weight 214.30400 g/mol.

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

Last updated:

How to cite: Jingsj. "3-Methyl-5-(methylthio)-4-vinylthiophene-2-carboxylic acid (CAS 175202-63-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1138205-0 (accessed 2026-10-25).

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