Ethyl 1-(4-nitrophenyl)-1H-pyrazole-4-carboxylate

1-(4-硝基苯基)-1H-吡唑-4-羧酸乙酯

Also known as: 1-(4-Nitrophenyl)-1H-pyrazole-4-carboxylic acid ethyl ester, 1-(4-Nitro-phenyl)-1H-pyrazole-4-carboxylic acid ethyl ester, 1H-Pyrazole-4-carboxylic acid, 1-(4-nitrophenyl)-, ethyl ester, ethyl 1-(4-nitrophenyl)pyrazole-4-carboxylate, 1-(4-Nitro-phenyl)-1H-pyrazol-4-carbonsaeure-aethylester, 1-<4-Nitro-phenyl>-pyrazol-4-carbonsaeure-aethylester

Ethyl 1-(4-nitrophenyl)-1H-pyrazole-4-carboxylate (CAS 91397-55-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C12H11N3O4 and a molecular weight of 261.23300 g/mol. It is also known as 1-(4-Nitrophenyl)-1H-pyrazole-4-carboxylic acid ethyl ester, 1-(4-Nitro-phenyl)-1H-pyrazole-4-carboxylic acid ethyl ester and 1H-Pyrazole-4-carboxylic acid, 1-(4-nitrophenyl)-, ethyl ester. Key properties include a boiling point of 410.123ºC at 760 mmHg, a density of 1.356g/cm3 and a flash point of 201.836ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
91397-55-6
Jingsj CID
J-1312250-4
Molecular Formula
C12H11N3O4
Chinese Name
1-(4-硝基苯基)-1H-吡唑-4-羧酸乙酯
Molecular Weight
261.23300 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point410.123ºC at 760 mmHg
Density1.356g/cm3
Flash Point201.836ºC

Frequently Asked Questions

What is the CAS number of Ethyl 1-(4-nitrophenyl)-1H-pyrazole-4-carboxylate?

The CAS number of Ethyl 1-(4-nitrophenyl)-1H-pyrazole-4-carboxylate is 91397-55-6.

What are the molecular formula and molecular weight of Ethyl 1-(4-nitrophenyl)-1H-pyrazole-4-carboxylate?

Ethyl 1-(4-nitrophenyl)-1H-pyrazole-4-carboxylate has molecular formula C12H11N3O4 and molecular weight 261.23300 g/mol.

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

Last updated:

How to cite: Jingsj. "Ethyl 1-(4-nitrophenyl)-1H-pyrazole-4-carboxylate (CAS 91397-55-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1312250-4 (accessed 2026-10-25).

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