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

1-甲基-3-(噻吩-2-基)-1H-吡唑-5-羧酸

Also known as: 1-Methyl-3-thien-2-yl-1H-pyrazole-5-carboxylic acid, 1-Methyl-3-(thien-2-yl)-1H-pyrazole-5-carboxylic acid, 2-Methyl-5-thiophen-2-yl-2H-pyrazole-3-carboxylic acid, 5-Carboxy-1-methyl-3-(thien-2-yl)-1H-pyrazole

1-Methyl-3-(thiophen-2-yl)-1H-pyrazole-5-carboxylic acid (CAS 871825-56-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H8N2O2S and a molecular weight of 208.23700 g/mol. It is also known as 1-Methyl-3-thien-2-yl-1H-pyrazole-5-carboxylic acid, 1-Methyl-3-(thien-2-yl)-1H-pyrazole-5-carboxylic acid and 2-Methyl-5-thiophen-2-yl-2H-pyrazole-3-carboxylic acid. Key properties include a melting point of 173ºC, a boiling point of 423.3ºC at 760 mmHg, a density of 1.44g/cm3 and a flash point of 209.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

871825-56-8

Jingsj CID

J-1516977-6

Molecular Formula

C₉H₈N₂O₂S

Chinese Name

1-甲基-3-(噻吩-2-基)-1H-吡唑-5-羧酸

Molecular Weight

208.23700 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026