1-methyl-5-phenoxy-3-(trifluoromethyl)pyrazole-4-carbonyl chloride

1-甲基-5-苯氧基-3-(三氟甲基)-1H-吡唑-4-羰酰氯

Also known as: 1-methyl-5-phenoxy-3-(trifluoromethyl)-1H-pyrazole-4-carbonyl chloride, 1-methyl-5-phenoxy-3-trifluoromethyl-1H-pyrazole-4-carbonyl chloride, 1-methyl-5-phenoxy-3-(trifluoromethyl)-4-pyrazolecarbonyl chloride

1-methyl-5-phenoxy-3-(trifluoromethyl)pyrazole-4-carbonyl chloride (CAS 921939-09-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C12H8ClF3N2O2 and a molecular weight of 304.65200 g/mol. It is also known as 1-methyl-5-phenoxy-3-(trifluoromethyl)-1H-pyrazole-4-carbonyl chloride, 1-methyl-5-phenoxy-3-trifluoromethyl-1H-pyrazole-4-carbonyl chloride and 1-methyl-5-phenoxy-3-(trifluoromethyl)-4-pyrazolecarbonyl chloride. Key properties include a melting point of 44.5-46.5ºC, a boiling point of 363.3ºC at 760 mmHg, a density of 1.44g/cm3 and a flash point of 173.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
921939-09-5
Jingsj CID
J-989090-5
Molecular Formula
C12H8ClF3N2O2
Chinese Name
1-甲基-5-苯氧基-3-(三氟甲基)-1H-吡唑-4-羰酰氯
Molecular Weight
304.65200 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point44.5-46.5ºC
Boiling Point363.3ºC at 760 mmHg
Density1.44g/cm3
Flash Point173.5ºC

Frequently Asked Questions

What is the CAS number of 1-methyl-5-phenoxy-3-(trifluoromethyl)pyrazole-4-carbonyl chloride?

The CAS number of 1-methyl-5-phenoxy-3-(trifluoromethyl)pyrazole-4-carbonyl chloride is 921939-09-5.

What are the molecular formula and molecular weight of 1-methyl-5-phenoxy-3-(trifluoromethyl)pyrazole-4-carbonyl chloride?

1-methyl-5-phenoxy-3-(trifluoromethyl)pyrazole-4-carbonyl chloride has molecular formula C12H8ClF3N2O2 and molecular weight 304.65200 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-5-phenoxy-3-(trifluoromethyl)pyrazole-4-carbonyl chloride (CAS 921939-09-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-989090-5 (accessed 2026-10-24).

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