4-Methyl-2-(2-pyrazinyl)-1,3-thiazole-5-carbonyl chloride

4-甲基-2-(2-吡嗪基)-1,3-噻唑-5-羰酰氯

Also known as: 4-Methyl-2-(pyrazin-2-yl)-1,3-thiazole-5-carbonyl chloride, 4-Methyl-2-(pyrazin-2-yl)thiazole-5-carbonyl chloride, 5-Thiazolecarbonyl chloride, 4-methyl-2-(2-pyrazinyl)-, 4-Methyl-2-(2-pyrazinyl)-1-thiazole-5-carbonyl chloride, 5-(Chlorocarbonyl)-4-methyl-2-(pyrazin-2-yl)-1,3-thiazole, 2-[5-(Chlorocarbonyl)-4-methyl-1,3-thiazol-2-yl]pyrazine

4-Methyl-2-(2-pyrazinyl)-1,3-thiazole-5-carbonyl chloride (CAS 257876-11-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H6ClN3OS and a molecular weight of 239.68100 g/mol. It is also known as 4-Methyl-2-(pyrazin-2-yl)-1,3-thiazole-5-carbonyl chloride, 4-Methyl-2-(pyrazin-2-yl)thiazole-5-carbonyl chloride and 5-Thiazolecarbonyl chloride, 4-methyl-2-(2-pyrazinyl)-. Key properties include a melting point of 101ºC, a boiling point of 410.8ºC at 760mmHg, a density of 1.439g/cm3 and a flash point of 202.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
257876-11-2
Jingsj CID
J-1091796-3
Molecular Formula
C9H6ClN3OS
Chinese Name
4-甲基-2-(2-吡嗪基)-1,3-噻唑-5-羰酰氯
Molecular Weight
239.68100 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point101ºC
Boiling Point410.8ºC at 760mmHg
Density1.439g/cm3
Flash Point202.3ºC

Frequently Asked Questions

What is the CAS number of 4-Methyl-2-(2-pyrazinyl)-1,3-thiazole-5-carbonyl chloride?

The CAS number of 4-Methyl-2-(2-pyrazinyl)-1,3-thiazole-5-carbonyl chloride is 257876-11-2.

What are the molecular formula and molecular weight of 4-Methyl-2-(2-pyrazinyl)-1,3-thiazole-5-carbonyl chloride?

4-Methyl-2-(2-pyrazinyl)-1,3-thiazole-5-carbonyl chloride has molecular formula C9H6ClN3OS and molecular weight 239.68100 g/mol.

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

Last updated:

How to cite: Jingsj. "4-Methyl-2-(2-pyrazinyl)-1,3-thiazole-5-carbonyl chloride (CAS 257876-11-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1091796-3 (accessed 2026-10-25).

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