Ethyl 4-hydroxy-5-methylthiazole-2-carboxylate

4-羟基-5-甲基-2-噻唑羧酸乙酯

Also known as: 2-Thiazolecarboxylic acid, 4-hydroxy-5-methyl-, ethyl ester, ethyl 4-hydroxy-5-methyl-1,3-thiazole-2-carboxylate, 2-carbethoxy-4-hydroxy-5-methylthiazole, 4-hydroxy-5-methyl-2-thiazolecarboxylic acid ethyl ester, ethyl 5-methyl-4-oxidanyl-1,3-thiazole-2-carboxylate

Ethyl 4-hydroxy-5-methylthiazole-2-carboxylate (CAS 133833-93-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H9NO3S and a molecular weight of 187.21600 g/mol. It is also known as 2-Thiazolecarboxylic acid, 4-hydroxy-5-methyl-, ethyl ester, ethyl 4-hydroxy-5-methyl-1,3-thiazole-2-carboxylate and 2-carbethoxy-4-hydroxy-5-methylthiazole. Key properties include a boiling point of 309.7ºC at 760 mmHg, a density of 1.325g/cm3 and a flash point of 141.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
133833-93-9
Jingsj CID
J-1052172-8
Molecular Formula
C7H9NO3S
Chinese Name
4-羟基-5-甲基-2-噻唑羧酸乙酯
Molecular Weight
187.21600 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point309.7ºC at 760 mmHg
Density1.325g/cm3
Flash Point141.1ºC

Frequently Asked Questions

What is the CAS number of Ethyl 4-hydroxy-5-methylthiazole-2-carboxylate?

The CAS number of Ethyl 4-hydroxy-5-methylthiazole-2-carboxylate is 133833-93-9.

What are the molecular formula and molecular weight of Ethyl 4-hydroxy-5-methylthiazole-2-carboxylate?

Ethyl 4-hydroxy-5-methylthiazole-2-carboxylate has molecular formula C7H9NO3S and molecular weight 187.21600 g/mol.

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

Last updated:

How to cite: Jingsj. "Ethyl 4-hydroxy-5-methylthiazole-2-carboxylate (CAS 133833-93-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1052172-8 (accessed 2026-10-22).

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