Ethyl 5-amino-1-ethyl-1H-pyrazole-4-carboxylate

5-氨基-1-乙基-1H-吡唑-4-羧酸乙酯

Also known as: 1H-Pyrazole-4-carboxylic acid, 5-amino-1-ethyl-, ethyl ester, ethyl 5-amino-1-ethyl-1H-pyrazole-4-carboxylate, 5-amino-1-ethylpyrazole-4-carboxylic acid ethyl ester, 5-amino-1-ethyl-1H-pyrazole-4-carboxylic acid ethyl ester, 1-ethyl-5-amino-1H-pyrazole-4-carboxylic acid ethyl ester

Ethyl 5-amino-1-ethyl-1H-pyrazole-4-carboxylate (CAS 90641-65-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H9N3O2 and a molecular weight of 155.15500 g/mol. It is also known as 1H-Pyrazole-4-carboxylic acid, 5-amino-1-ethyl-, ethyl ester, ethyl 5-amino-1-ethyl-1H-pyrazole-4-carboxylate and 5-amino-1-ethylpyrazole-4-carboxylic acid ethyl ester. Key properties include a boiling point of 311.7ºC at 760mmHg, a density of 1.24g/cm3 and a flash point of 142.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
90641-65-9
Jingsj CID
J-1467554-2
Molecular Formula
C6H9N3O2
Chinese Name
5-氨基-1-乙基-1H-吡唑-4-羧酸乙酯
Molecular Weight
155.15500 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point311.7ºC at 760mmHg
Density1.24g/cm3
Flash Point142.3ºC

Frequently Asked Questions

What is the CAS number of Ethyl 5-amino-1-ethyl-1H-pyrazole-4-carboxylate?

The CAS number of Ethyl 5-amino-1-ethyl-1H-pyrazole-4-carboxylate is 90641-65-9.

What are the molecular formula and molecular weight of Ethyl 5-amino-1-ethyl-1H-pyrazole-4-carboxylate?

Ethyl 5-amino-1-ethyl-1H-pyrazole-4-carboxylate has molecular formula C6H9N3O2 and molecular weight 155.15500 g/mol.

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

Last updated:

How to cite: Jingsj. "Ethyl 5-amino-1-ethyl-1H-pyrazole-4-carboxylate (CAS 90641-65-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1467554-2 (accessed 2026-10-22).

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