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1-Methyl-3-(trifluoromethyl)-1H-pyrazole-4-sulfonyl chloride

1-甲基-3-(三氟甲基)-1H-吡唑-4-磺酰氯

Also known as: 1-Methyl-3-(trifluoromethyl)pyrazole-4-sulfonyl chloride, 1H-Pyrazole-4-sulfonyl chloride, 1-methyl-3-(trifluoromethyl)-, 1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-sulfonyl chloride

1-Methyl-3-(trifluoromethyl)-1H-pyrazole-4-sulfonyl chloride (CAS 519056-67-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H4ClF3N2O2S and a molecular weight of 248.61100 g/mol. It is also known as 1-Methyl-3-(trifluoromethyl)pyrazole-4-sulfonyl chloride, 1H-Pyrazole-4-sulfonyl chloride, 1-methyl-3-(trifluoromethyl)- and 1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-sulfonyl chloride. Key properties include a melting point of 34ºC, a boiling point of 302.522ºC at 760 mmHg, a density of 1.74g/cm3 and a flash point of 136.761ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
519056-67-8
Jingsj CID
J-1359883-7
Molecular Formula
C5H4ClF3N2O2S
Chinese Name
1-甲基-3-(三氟甲基)-1H-吡唑-4-磺酰氯
Molecular Weight
248.61100 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point34ºC
Boiling Point302.522ºC at 760 mmHg
Density1.74g/cm3
Flash Point136.761ºC

Frequently Asked Questions

What is the CAS number of 1-Methyl-3-(trifluoromethyl)-1H-pyrazole-4-sulfonyl chloride?

The CAS number of 1-Methyl-3-(trifluoromethyl)-1H-pyrazole-4-sulfonyl chloride is 519056-67-8.

What are the molecular formula and molecular weight of 1-Methyl-3-(trifluoromethyl)-1H-pyrazole-4-sulfonyl chloride?

1-Methyl-3-(trifluoromethyl)-1H-pyrazole-4-sulfonyl chloride has molecular formula C5H4ClF3N2O2S and molecular weight 248.61100 g/mol.

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

Last updated:

How to cite: Jingsj. "1-Methyl-3-(trifluoromethyl)-1H-pyrazole-4-sulfonyl chloride (CAS 519056-67-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1359883-7 (accessed 2026-10-24).

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