1-(4-Bromophenyl)-5-methyl-1H-pyrazole-4-carboxylic acid

1-(4-溴苯基)-5-甲基-1H-吡唑-4-羧酸

Also known as: 1-(4-Bromo-phenyl)-5-methyl-1H-pyrazole-4-carboxylic acid, 1-(4-bromophenyl)-5-methylpyrazole-4-carboxylic acid, 1H-Pyrazole-4-carboxylic acid, 1-(4-bromophenyl)-5-methyl-

1-(4-Bromophenyl)-5-methyl-1H-pyrazole-4-carboxylic acid (CAS 187998-44-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H9BrN2O2 and a molecular weight of 281.10500 g/mol. It is also known as 1-(4-Bromo-phenyl)-5-methyl-1H-pyrazole-4-carboxylic acid, 1-(4-bromophenyl)-5-methylpyrazole-4-carboxylic acid and 1H-Pyrazole-4-carboxylic acid, 1-(4-bromophenyl)-5-methyl-. Key properties include a boiling point of 422.4ºC at 760 mmHg, a density of 1.61g/cm3 and a flash point of 209.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
187998-44-3
Jingsj CID
J-1513479-0
Molecular Formula
C11H9BrN2O2
Chinese Name
1-(4-溴苯基)-5-甲基-1H-吡唑-4-羧酸
Molecular Weight
281.10500 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point422.4ºC at 760 mmHg
Density1.61g/cm3
Flash Point209.3ºC

Frequently Asked Questions

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

The CAS number of 1-(4-Bromophenyl)-5-methyl-1H-pyrazole-4-carboxylic acid is 187998-44-3.

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

1-(4-Bromophenyl)-5-methyl-1H-pyrazole-4-carboxylic acid has molecular formula C11H9BrN2O2 and molecular weight 281.10500 g/mol.

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

Last updated:

How to cite: Jingsj. "1-(4-Bromophenyl)-5-methyl-1H-pyrazole-4-carboxylic acid (CAS 187998-44-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1513479-0 (accessed 2026-10-25).

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