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

4-氨基-5-甲基-4H-1,2,4-三唑-3-硫醇

Also known as: 3H-1,2,4-Triazole-3-thione,4-amino-2,4-dihydro-5-methyl-, 4-amino-3-methyl-1H-1,2,4-triazole-5-thione, 4-Amino-3-mercapto-5-methyl-1,2,4-triazole, 3-Methyl-4-amino-5-mercapto-1,2,4-triazole, NSC527797

4-Amino-5-methyl-4H-1,2,4-triazole-3-thiol (CAS 20939-15-5) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C3H6N4S and a molecular weight of 130.17200 g/mol. It is also known as 3H-1,2,4-Triazole-3-thione,4-amino-2,4-dihydro-5-methyl-, 4-amino-3-methyl-1H-1,2,4-triazole-5-thione and 4-Amino-3-mercapto-5-methyl-1,2,4-triazole. Key properties include a melting point of 202-205°C, a boiling point of 196.2ºC at 760 mmHg, a density of 1.69 g/cm3 and a flash point of 72.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
20939-15-5
Jingsj CID
J-1106240-4
Molecular Formula
C3H6N4S
Chinese Name
4-氨基-5-甲基-4H-1,2,4-三唑-3-硫醇
Molecular Weight
130.17200 g/mol
Category
Alcohols
Last updated
8/21/2026

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Physicochemical Properties

Melting Point202-205°C
Boiling Point196.2ºC at 760 mmHg
Density1.69 g/cm3
Flash Point72.4ºC

Frequently Asked Questions

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

The CAS number of 4-Amino-5-methyl-4H-1,2,4-triazole-3-thiol is 20939-15-5.

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

4-Amino-5-methyl-4H-1,2,4-triazole-3-thiol has molecular formula C3H6N4S and molecular weight 130.17200 g/mol.

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

Last updated:

How to cite: Jingsj. "4-Amino-5-methyl-4H-1,2,4-triazole-3-thiol (CAS 20939-15-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1106240-4 (accessed 2026-10-22).

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