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5-ethyl-1H-pyrazole-3-carboxylic acid

5-乙基-1H-吡唑-3-羧酸

Also known as: 3-ethyl-1H-pyrazole-5-carboxylic acid, 3-ethyl-1H-pyrazol-5-carboxylic acid, 3-ethyl-1H-pyrazolo-5-carboxylic acid, 5-ethyl-1H-pyrazole-3-carboxylic acid, 3-ethyl-pyrazole-5-carboxylic acid, 1H-Pyrazole-3-carboxylic acid, 5-ethyl-, AKOS PAO-0830, PYR324

5-ethyl-1H-pyrazole-3-carboxylic acid (CAS 4027-59-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H8N2O2 and a molecular weight of 140.14000 g/mol. It is also known as 3-ethyl-1H-pyrazole-5-carboxylic acid, 3-ethyl-1H-pyrazol-5-carboxylic acid and 3-ethyl-1H-pyrazolo-5-carboxylic acid. Key properties include a boiling point of 385.5ºC at 760mmHg, a density of 1.318g/cm3 and a flash point of 186.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
4027-59-2
Jingsj CID
J-1411877-9
Molecular Formula
C6H8N2O2
Chinese Name
5-乙基-1H-吡唑-3-羧酸
Molecular Weight
140.14000 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point385.5ºC at 760mmHg
Density1.318g/cm3
Flash Point186.9ºC

Frequently Asked Questions

What is the CAS number of 5-ethyl-1H-pyrazole-3-carboxylic acid?

The CAS number of 5-ethyl-1H-pyrazole-3-carboxylic acid is 4027-59-2.

What are the molecular formula and molecular weight of 5-ethyl-1H-pyrazole-3-carboxylic acid?

5-ethyl-1H-pyrazole-3-carboxylic acid has molecular formula C6H8N2O2 and molecular weight 140.14000 g/mol.

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

Last updated:

How to cite: Jingsj. "5-ethyl-1H-pyrazole-3-carboxylic acid (CAS 4027-59-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1411877-9 (accessed 2026-10-22).

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