4-amino-6-methyl-3-sulfanylidene-2H-1,2,4-triazin-5-one

Also known as: 4-Amino-3-mercapto-6-methyl-1,2,4-triazin-5(4H)-one, 4-Amino-6-methyl-3-thioxo-2,3,4,5-tetrahydro-1,2,4-triazin-5-one, 4-Amino-6-methyl-3-sulfanylidene-2,3,4,5-tetrahydro-1,2,4-triazin-5-one, 4-Amino-3,4-dihydro-6-methyl-3-thioxo-1,2,4-triazin-5(2H)-one, 4-Amino-5-oxo-3-thioxo-6-methyl-2,3,4,5-tetrahydro-1,2,4-triazine, 4-Amino-6-methyl-3-sulfanyl-1,2,4-triazin-5(4H)-one, 1,2,4-Triazin-5(2H)-one, 4-amino-3,4-dihydro-6-methyl-3-thioxo-, F3095-1419

4-amino-6-methyl-3-sulfanylidene-2H-1,2,4-triazin-5-one (CAS 22278-81-5) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C4H6N4OS and a molecular weight of 158.18200 g/mol. Key properties include a boiling point of 255.1ºC at 760mmHg, a density of 1.75g/cm3 and a flash point of 108.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 22278-81-5
Jingsj CID: J-1506725-1
Molecular Formula: C₄H₆N₄OS
Molecular Weight: 158.18200 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	255.1ºC at 760mmHg
Density	1.75g/cm3
Flash Point	108.1ºC
Exact Mass	158.02600
PSA	112.60000
Vapor Pressure	0.0166mmHg at 25°C
Refractive Index	1.793

Customs & Trade Information

HS Code	2933699090
Summary	2933699090 other compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 4-amino-6-methyl-3-sulfanylidene-2H-1,2,4-triazin-5-one?

The CAS number of 4-amino-6-methyl-3-sulfanylidene-2H-1,2,4-triazin-5-one is 22278-81-5.

What are the molecular formula and molecular weight of 4-amino-6-methyl-3-sulfanylidene-2H-1,2,4-triazin-5-one?

4-amino-6-methyl-3-sulfanylidene-2H-1,2,4-triazin-5-one has molecular formula C4H6N4OS and molecular weight 158.18200 g/mol.

What are the upstream and downstream products of 4-amino-6-methyl-3-sulfanylidene-2H-1,2,4-triazin-5-one?

For 4-amino-6-methyl-3-sulfanylidene-2H-1,2,4-triazin-5-one, Upstream Products: Pyruvic acid, Thiocarbohydrazide; Downstream Products: 6-Aza-2-thiothymine.

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

Last updated: 8/21/2026

How to cite: Jingsj. "4-amino-6-methyl-3-sulfanylidene-2H-1,2,4-triazin-5-one (CAS 22278-81-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1506725-1 (accessed 2026-11-09).

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