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5-(Methylthio)-1,3,4-thiadiazole-2-thiol

Also known as: 2-Mercapto-5-methylthio-1,3,4-thiadiazole, 5-Methylthio-1,3,4-thiadiazole-2(3H)-thione, 5-Methylsulfanyl-3H-1,3,4-thiadiazole-2-thione

5-(Methylthio)-1,3,4-thiadiazole-2-thiol (CAS 6264-40-0) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C3H4N2S3 and a molecular weight of 164.27200 g/mol. Key properties include a melting point of 138-141 °C(lit.), a boiling point of 243.3ºC at 760 mmHg, a density of 1.67g/cm3 and a flash point of 101ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
6264-40-0
Jingsj CID
J-1993442-0
Molecular Formula
C3H4N2S3
Molecular Weight
164.27200 g/mol
Category
Alcohols
Last updated
8/21/2026

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Physicochemical Properties

Melting Point138-141 °C(lit.)
Boiling Point243.3ºC at 760 mmHg
Density1.67g/cm3
Flash Point101ºC
Exact Mass163.95400
PSA118.12000
LogP1.54870
Refractive Index1.818

Frequently Asked Questions

What is the CAS number of 5-(Methylthio)-1,3,4-thiadiazole-2-thiol?

The CAS number of 5-(Methylthio)-1,3,4-thiadiazole-2-thiol is 6264-40-0.

What are the molecular formula and molecular weight of 5-(Methylthio)-1,3,4-thiadiazole-2-thiol?

5-(Methylthio)-1,3,4-thiadiazole-2-thiol has molecular formula C3H4N2S3 and molecular weight 164.27200 g/mol.

What are the upstream and downstream products of 5-(Methylthio)-1,3,4-thiadiazole-2-thiol?

For 5-(Methylthio)-1,3,4-thiadiazole-2-thiol, Upstream Products: 2,5-Dimercapto-1,3,4-thiadiazole, Dimethyl sulfate, 2-Mercapto-5-methyl-1,3,4-thiadiazole; Downstream Products: 2,5-Bis(methylthio)-1,3,4-thiadiazole, 3-[(5-methylsulfanyl-1,3,4-thiadiazol-2-yl)sulfanyl]pyrazine-2-carbonitrile, 3-(Hydroxymethyl)-5-(methylthio)-1,3,4-thiadiazole-2(3H)-thione.

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

Last updated:

How to cite: Jingsj. "5-(Methylthio)-1,3,4-thiadiazole-2-thiol (CAS 6264-40-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1993442-0 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.