5-thioxo-4,5-dihydro-1,2,4-triazin-3(2H)-one

5-硫代-4,5-二氢-1,2,4-三嗪-3(2H)-酮

Also known as: 1,2,4-Triazin-3(2H)-one,4,5-dihydro-5-thioxo-, 5-Thioxo-3,4-dihydro-1,2,4-triazin-3(2H)-one, 5-Thioxo-4,5-dihydro-1,2,4-triazin-3(2H)-one, 5-Thioxo-4,5-dihydro-2H-[1,2,4]triazin-3-one, 5-sulfanylidene-2,3,4,5-tetrahydro-1,2,4-triazin-3-one, 5-sulfanylidene-2H-1,2,4-triazin-3-one, 6-aza-4-thiouracil, NSC 38622, F1207-0026

5-thioxo-4,5-dihydro-1,2,4-triazin-3(2H)-one (CAS 1627-37-8) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C3H3N3OS and a molecular weight of 129.14000 g/mol. It is also known as 1,2,4-Triazin-3(2H)-one,4,5-dihydro-5-thioxo-, 5-Thioxo-3,4-dihydro-1,2,4-triazin-3(2H)-one and 5-Thioxo-4,5-dihydro-1,2,4-triazin-3(2H)-one. Key properties include a boiling point of 431ºC at 760mmHg, a density of 1.79g/cm3 and a flash point of 214.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1627-37-8
Jingsj CID
J-1518875-5
Molecular Formula
C3H3N3OS
Chinese Name
5-硫代-4,5-二氢-1,2,4-三嗪-3(2H)-酮
Molecular Weight
129.14000 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point431ºC at 760mmHg
Density1.79g/cm3
Flash Point214.4ºC

Frequently Asked Questions

What is the CAS number of 5-thioxo-4,5-dihydro-1,2,4-triazin-3(2H)-one?

The CAS number of 5-thioxo-4,5-dihydro-1,2,4-triazin-3(2H)-one is 1627-37-8.

What are the molecular formula and molecular weight of 5-thioxo-4,5-dihydro-1,2,4-triazin-3(2H)-one?

5-thioxo-4,5-dihydro-1,2,4-triazin-3(2H)-one has molecular formula C3H3N3OS and molecular weight 129.14000 g/mol.

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

Last updated:

How to cite: Jingsj. "5-thioxo-4,5-dihydro-1,2,4-triazin-3(2H)-one (CAS 1627-37-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1518875-5 (accessed 2026-10-24).

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