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1-(4-Nitrophenyl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid

1-(4-硝基苯基)-5-(三氟甲基)-1H-吡唑-4-羧酸

Also known as: 1-(4-Nitrophenyl)-5-(trifluoromethyl)pyrazole-4-carboxylic acid, 1H-Pyrazole-4-carboxylic acid, 1-(4-nitrophenyl)-5-(trifluoromethyl)-

1-(4-Nitrophenyl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid (CAS 142818-03-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H6F3N3O4 and a molecular weight of 301.17800 g/mol. It is also known as 1-(4-Nitrophenyl)-5-(trifluoromethyl)pyrazole-4-carboxylic acid and 1H-Pyrazole-4-carboxylic acid, 1-(4-nitrophenyl)-5-(trifluoromethyl)-. Key property: a melting point of 199-203 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
142818-03-9
Jingsj CID
J-21171-2
Molecular Formula
C11H6F3N3O4
Chinese Name
1-(4-硝基苯基)-5-(三氟甲基)-1H-吡唑-4-羧酸
Molecular Weight
301.17800 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point199-203 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 1-(4-Nitrophenyl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid?

The CAS number of 1-(4-Nitrophenyl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid is 142818-03-9.

What are the molecular formula and molecular weight of 1-(4-Nitrophenyl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid?

1-(4-Nitrophenyl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid has molecular formula C11H6F3N3O4 and molecular weight 301.17800 g/mol.

Is 1-(4-Nitrophenyl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid hazardous?

1-(4-Nitrophenyl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "1-(4-Nitrophenyl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid (CAS 142818-03-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-21171-2 (accessed 2026-10-23).

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