Ethyl 5-methyl-1H-1,2,4-triazole-3-carboxylate

5-甲基-1H-1,2,4-三唑-3-羧酸乙酯

Also known as: Ethyl 5-methyl-4H-1,2,4-triazole-3-carboxylate, 3-methyl-1H-1,2,4-triazole-5-carboxylic acid ethyl ester, 5-Methyl-2H-[1,2,4]triazole-3-carboxylic acid ethyl ester, ETHYL 5-METHYL-2H-1,2,4-TRIAZOLE-3-CARBOXYLATE, 1H-1,2,4-Triazole-5-carboxylic acid, 3-methyl-, ethyl ester, 5-Methyl-1H-1,2,4-triazole-3-carboxylic acid ethyl ester

Ethyl 5-methyl-1H-1,2,4-triazole-3-carboxylate (CAS 40253-47-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H9N3O2 and a molecular weight of 155.155 g/mol. It is also known as Ethyl 5-methyl-4H-1,2,4-triazole-3-carboxylate, 3-methyl-1H-1,2,4-triazole-5-carboxylic acid ethyl ester and 5-Methyl-2H-[1,2,4]triazole-3-carboxylic acid ethyl ester. Key properties include a boiling point of 312.5±25.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 142.8±23.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
40253-47-2
Jingsj CID
J-1048727-9
Molecular Formula
C6H9N3O2
Chinese Name
5-甲基-1H-1,2,4-三唑-3-羧酸乙酯
Molecular Weight
155.155 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point312.5±25.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point142.8±23.2 °C

Frequently Asked Questions

What is the CAS number of Ethyl 5-methyl-1H-1,2,4-triazole-3-carboxylate?

The CAS number of Ethyl 5-methyl-1H-1,2,4-triazole-3-carboxylate is 40253-47-2.

What are the molecular formula and molecular weight of Ethyl 5-methyl-1H-1,2,4-triazole-3-carboxylate?

Ethyl 5-methyl-1H-1,2,4-triazole-3-carboxylate has molecular formula C6H9N3O2 and molecular weight 155.155 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-methyl-1H-1,2,4-triazole-3-carboxylate (CAS 40253-47-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1048727-9 (accessed 2026-10-24).

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