5-(Methylthio)pyrazin-2-amine

5-(甲硫基)-2-氨基吡嗪

Also known as: Pyrazinamine, 5-(methylthio)- (9CI), 2-Pyrazinamine, 5-(methylthio)-, 5-(Methylsulfanyl)pyrazin-2-amine, 5-(Methylthio)-2-pyrazinamine, 5-(methylthio)-pyrazinamine, 5-Methylsulfanyl-pyrazin-2-ylamine, 5-methylsulfanylpyrazin-2-amine, 5-methylthiopyrazine-2-ylamine, 2-Amino-5-methylthiopyrazine

5-(Methylthio)pyrazin-2-amine (CAS 251549-38-9) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C5H7N3S and a molecular weight of 141.194 g/mol. It is also known as Pyrazinamine, 5-(methylthio)- (9CI), 2-Pyrazinamine, 5-(methylthio)- and 5-(Methylsulfanyl)pyrazin-2-amine. Key properties include a boiling point of 335.9±37.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 156.9±26.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 251549-38-9
Jingsj CID: J-1497275-5
Molecular Formula: C₅H₇N₃S
Chinese Name: 5-(甲硫基)-2-氨基吡嗪
Molecular Weight: 141.194 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	335.9±37.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	156.9±26.5 °C

Frequently Asked Questions

What is the CAS number of 5-(Methylthio)pyrazin-2-amine?

The CAS number of 5-(Methylthio)pyrazin-2-amine is 251549-38-9.

What are the molecular formula and molecular weight of 5-(Methylthio)pyrazin-2-amine?

5-(Methylthio)pyrazin-2-amine has molecular formula C5H7N3S and molecular weight 141.194 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. "5-(Methylthio)pyrazin-2-amine (CAS 251549-38-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1497275-5 (accessed 2026-10-22).

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