Methyl 4-oxotetrahydrothiophene-3-carboxylate

4-氧代四氢噻吩-3-羧酸甲酯

Also known as: 4-Carbomethoxytetrahydro-3-thiophenone, Methyl 4-oxo-2,3,4,5-tetrahydrothiophene-3-carboxylate, Methyl tetrahydro-4-oxo-3-thiophenecarboxylate, Tetrahydro-4-oxo-3-thiophenecarboxylic acid methyl ester, 4-Oxotetrahydrothiophene-3-carboxylic acid methyl ester, 4-Carbomethoxy-2,3,4,5-tetrahydro-3-thiophenone, Methyl 3-oxotetrahydrothiophene-4-carboxylate

Methyl 4-oxotetrahydrothiophene-3-carboxylate (CAS 2689-68-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H8O3S and a molecular weight of 160.191 g/mol. It is also known as 4-Carbomethoxytetrahydro-3-thiophenone, Methyl 4-oxo-2,3,4,5-tetrahydrothiophene-3-carboxylate and Methyl tetrahydro-4-oxo-3-thiophenecarboxylate. Key properties include a melting point of 38-41ºC, a boiling point of 248.4±40.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 116.7±15.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
2689-68-1
Jingsj CID
J-1492712-6
Molecular Formula
C6H8O3S
Chinese Name
4-氧代四氢噻吩-3-羧酸甲酯
Molecular Weight
160.191 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point38-41ºC
Boiling Point248.4±40.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point116.7±15.4 °C

Frequently Asked Questions

What is the CAS number of Methyl 4-oxotetrahydrothiophene-3-carboxylate?

The CAS number of Methyl 4-oxotetrahydrothiophene-3-carboxylate is 2689-68-1.

What are the molecular formula and molecular weight of Methyl 4-oxotetrahydrothiophene-3-carboxylate?

Methyl 4-oxotetrahydrothiophene-3-carboxylate has molecular formula C6H8O3S and molecular weight 160.191 g/mol.

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

Last updated:

How to cite: Jingsj. "Methyl 4-oxotetrahydrothiophene-3-carboxylate (CAS 2689-68-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1492712-6 (accessed 2026-10-22).

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