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Ethyl 5-methylthiophene-2-carboxylate

5-甲基噻吩-2-羧酸乙酯

Also known as: 2-Thiophenecarboxylic acid, 5-methyl-, ethyl ester, Ethyl 5-methyl-2-thiophenecarboxylate, 5-Methyl-2-thiophenecarboxylic acid ethyl ester, 5-Methyl-thiophene-2-carboxylic acid ethyl ester, 2-Carbethoxy-5-methylthiophene, ethyl 2-methyl-5-thiophenecarboxylate

Ethyl 5-methylthiophene-2-carboxylate (CAS 5751-81-5) 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 2-Thiophenecarboxylic acid, 5-methyl-, ethyl ester, Ethyl 5-methyl-2-thiophenecarboxylate and 5-Methyl-2-thiophenecarboxylic acid ethyl ester. Key properties include a boiling point of 243ºC at 760 mmHg, a density of 1.137g/cm3 and a flash point of 100.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
5751-81-5
Jingsj CID
J-1060133-4
Molecular Formula
C8H10O2S
Chinese Name
5-甲基噻吩-2-羧酸乙酯
Molecular Weight
170.22900 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point243ºC at 760 mmHg
Density1.137g/cm3
Flash Point100.8ºC

Frequently Asked Questions

What is the CAS number of Ethyl 5-methylthiophene-2-carboxylate?

The CAS number of Ethyl 5-methylthiophene-2-carboxylate is 5751-81-5.

What are the molecular formula and molecular weight of Ethyl 5-methylthiophene-2-carboxylate?

Ethyl 5-methylthiophene-2-carboxylate 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:

How to cite: Jingsj. "Ethyl 5-methylthiophene-2-carboxylate (CAS 5751-81-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1060133-4 (accessed 2026-10-25).

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