1-Methyl-1H-1,2,3-triazole-4-carboxylic acid

1-甲基-1H-1,2,3-三唑-4-甲酸

Also known as: 1-METHYL-1H-1,2,3-TRIAZOLE-4-CARBOXYLIC ACID, 1-Methyl-1H-1,2,3-triazole-4-carboxylic acid AldrichCPR, 1-Methyl-1H-[1,2,3]triazol-4-carbonsaeure, 1-methyl-1,2,3-triazole-4-carboxylic acid, 1-methyltriazole-4-carboxylic acid, 1H-1,2,3-Triazole-4-carboxylic acid, 1-methyl-, F2166-0002

1-Methyl-1H-1,2,3-triazole-4-carboxylic acid (CAS 16681-71-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H5N3O2 and a molecular weight of 127.101 g/mol. It is also known as 1-METHYL-1H-1,2,3-TRIAZOLE-4-CARBOXYLIC ACID, 1-Methyl-1H-1,2,3-triazole-4-carboxylic acid AldrichCPR and 1-Methyl-1H-[1,2,3]triazol-4-carbonsaeure. Key properties include a melting point of 224℃ (decomp), a boiling point of 350.7±34.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 165.9±25.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
16681-71-3
Jingsj CID
J-1085155-5
Molecular Formula
C4H5N3O2
Chinese Name
1-甲基-1H-1,2,3-三唑-4-甲酸
Molecular Weight
127.101 g/mol
Category
Organic Acids
Last updated
8/21/2026

No offers for this compound yet.

Request a quote

Physicochemical Properties

Melting Point224℃ (decomp)
Boiling Point350.7±34.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point165.9±25.7 °C

Frequently Asked Questions

What is the CAS number of 1-Methyl-1H-1,2,3-triazole-4-carboxylic acid?

The CAS number of 1-Methyl-1H-1,2,3-triazole-4-carboxylic acid is 16681-71-3.

What are the molecular formula and molecular weight of 1-Methyl-1H-1,2,3-triazole-4-carboxylic acid?

1-Methyl-1H-1,2,3-triazole-4-carboxylic acid has molecular formula C4H5N3O2 and molecular weight 127.101 g/mol.

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

Last updated:

How to cite: Jingsj. "1-Methyl-1H-1,2,3-triazole-4-carboxylic acid (CAS 16681-71-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1085155-5 (accessed 2026-10-24).

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