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3-(Trifluoromethyl)-1H-pyrazole-4-carboxylic acid

Also known as: 5-(Trifluoromethyl)-1H-pyrazole-4-carboxylic acid, 3-(Trifluoromethyl)pyrazole-4-carboxylic acid, 3-(Trifluoromethyl)pyrazole-4-carboxylic acid 97%, 3-(Trifluoromethyl)-2H-pyrazole-4-carboxylic acid, 3-(TrifluoroMethyl)pyrazole-4-corboxylic acid, 1H-Pyrazole-4-carboxylic acid, 3-(trifluoromethyl)-, 1H-Pyrazole-4-carboxylic acid,5-(trifluoromethyl)-, (TRIFLUOROMETHYL)-1H-PYRAZOLE-4-CARBOXYLIC ACID, 5-(Trifluoromethyl)-1H-pyrazole-4-carboxylicacid

3-(Trifluoromethyl)-1H-pyrazole-4-carboxylic acid (CAS 543739-84-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H3F3N2O2 and a molecular weight of 180.085 g/mol. Key properties include a boiling point of 349.9±42.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 165.4±27.9 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
543739-84-0
Jingsj CID
J-882594-3
Molecular Formula
C5H3F3N2O2
Molecular Weight
180.085 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point349.9±42.0 °C at 760 mmHg
Density1.7±0.1 g/cm3
Flash Point165.4±27.9 °C
Exact Mass180.014664
PSA65.98000
LogP1.78
Vapor Pressure0.0±0.8 mmHg at 25°C
Refractive Index1.485

GHS Safety & Compliance

Acute ToxicitySignal word: Danger
  • H301 — Toxic if swallowed

Frequently Asked Questions

What is the CAS number of 3-(Trifluoromethyl)-1H-pyrazole-4-carboxylic acid?

The CAS number of 3-(Trifluoromethyl)-1H-pyrazole-4-carboxylic acid is 543739-84-0.

What are the molecular formula and molecular weight of 3-(Trifluoromethyl)-1H-pyrazole-4-carboxylic acid?

3-(Trifluoromethyl)-1H-pyrazole-4-carboxylic acid has molecular formula C5H3F3N2O2 and molecular weight 180.085 g/mol.

Is 3-(Trifluoromethyl)-1H-pyrazole-4-carboxylic acid hazardous?

3-(Trifluoromethyl)-1H-pyrazole-4-carboxylic acid has GHS signal word Danger and hazard statements H301 — Toxic if swallowed.

What are the upstream and downstream products of 3-(Trifluoromethyl)-1H-pyrazole-4-carboxylic acid?

For 3-(Trifluoromethyl)-1H-pyrazole-4-carboxylic acid, Upstream Products: Ethyl 3-(trifluoromethyl)-1H-pyrazole-4-carboxylate, ethyl 2-(ethoxymethylene)-4,4,4-trifluoro-3-oxobutyrate.

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

Last updated:

How to cite: Jingsj. "3-(Trifluoromethyl)-1H-pyrazole-4-carboxylic acid (CAS 543739-84-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-882594-3 (accessed 2026-11-09).

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