1-(4-methylphenyl)-3-(thiophen-2-yl)-1H-pyrazole-5-carboxylic acid

3-(噻吩-2-基)-1-(对甲苯基)-1H-吡唑-5-羧酸

Also known as: 5-thiophen-2-yl-2-p-tolyl-2H-pyrazole-3-carboxylic acid, 1-(4-methylphenyl)-3-(2-thienyl)-1H-pyrazole-5-carboxylic acid, 2-(4-methylphenyl)-5-thiophen-2-ylpyrazole-3-carboxylic acid, 1H-pyrazole-5-carboxylic acid, 1-(4-methylphenyl)-3-(2-thienyl)-

1-(4-methylphenyl)-3-(thiophen-2-yl)-1H-pyrazole-5-carboxylic acid (CAS 618382-78-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C15H12N2O2S and a molecular weight of 284.33300 g/mol. It is also known as 5-thiophen-2-yl-2-p-tolyl-2H-pyrazole-3-carboxylic acid, 1-(4-methylphenyl)-3-(2-thienyl)-1H-pyrazole-5-carboxylic acid and 2-(4-methylphenyl)-5-thiophen-2-ylpyrazole-3-carboxylic acid. Key properties include a boiling point of 501.8ºC at 760 mmHg, a density of 1.33g/cm3 and a flash point of 257.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
618382-78-8
Jingsj CID
J-1004445-8
Molecular Formula
C15H12N2O2S
Chinese Name
3-(噻吩-2-基)-1-(对甲苯基)-1H-吡唑-5-羧酸
Molecular Weight
284.33300 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point501.8ºC at 760 mmHg
Density1.33g/cm3
Flash Point257.3ºC

Frequently Asked Questions

What is the CAS number of 1-(4-methylphenyl)-3-(thiophen-2-yl)-1H-pyrazole-5-carboxylic acid?

The CAS number of 1-(4-methylphenyl)-3-(thiophen-2-yl)-1H-pyrazole-5-carboxylic acid is 618382-78-8.

What are the molecular formula and molecular weight of 1-(4-methylphenyl)-3-(thiophen-2-yl)-1H-pyrazole-5-carboxylic acid?

1-(4-methylphenyl)-3-(thiophen-2-yl)-1H-pyrazole-5-carboxylic acid has molecular formula C15H12N2O2S and molecular weight 284.33300 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-methylphenyl)-3-(thiophen-2-yl)-1H-pyrazole-5-carboxylic acid (CAS 618382-78-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1004445-8 (accessed 2026-10-24).

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