3-methyl-1H-1,2,4-triazole-5-thiol

3-巯基-5-甲基-1,2,4-三氮唑

Also known as: 3-Mercapto-5-methyl-1,2,4-triazole, 5-methyl-1,2,4-triazole-3-thione, 5-methyl-1,2-dihydro-3H-1,2,4-triazole-3-thione, 3-methyl-1H-1,2,4-triazole-5-thione, 5-methyl-1H-1,2,4-triazole-3-thiol

3-methyl-1H-1,2,4-triazole-5-thiol (CAS 7271-44-5) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C3H5N3S and a molecular weight of 115.157 g/mol. It is also known as 3-Mercapto-5-methyl-1,2,4-triazole, 5-methyl-1,2,4-triazole-3-thione and 5-methyl-1,2-dihydro-3H-1,2,4-triazole-3-thione. Key properties include a melting point of 282-283ºC, a boiling point of 144.2±23.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 41.0±22.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 7271-44-5
Jingsj CID: J-924150-1
Molecular Formula: C₃H₅N₃S
Chinese Name: 3-巯基-5-甲基-1,2,4-三氮唑
Molecular Weight: 115.157 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	282-283ºC
Boiling Point	144.2±23.0 °C at 760 mmHg
Density	1.6±0.1 g/cm3
Flash Point	41.0±22.6 °C

Frequently Asked Questions

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

The CAS number of 3-methyl-1H-1,2,4-triazole-5-thiol is 7271-44-5.

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

3-methyl-1H-1,2,4-triazole-5-thiol has molecular formula C3H5N3S and molecular weight 115.157 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "3-methyl-1H-1,2,4-triazole-5-thiol (CAS 7271-44-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-924150-1 (accessed 2026-10-22).

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