ethyl 5-(thiophen-2-yl)-1H-pyrazole-3-carboxylate

3-(噻吩-2-基)-1H-吡唑-5-羧酸乙酯

Also known as: ethyl 5-thien-2-yl-1H-pyrazole-3-carboxylate, ethyl 5-(2-thienyl)-1H-pyrazole-3-carboxylate, ethyl 3-(thien-2-yl)-1H-pyrazole-5-carboxylate, ethyl 3-(2-thienyl)-1H-pyrazole-5-carboxylate, ethyl 5-thiophen-2-yl-2H-pyrazole-3-carboxylate, ethyl 5-(thiophen-2-yl)-1H-pyrazole-3-carboxylate, 1H-pyrazole-3-carboxylic acid, 5-(2-thienyl)-, ethyl ester, 5-(thiophen-2-yl)-1H-pyrazole-3-carboxylic acid ethyl ester, Buttpark 43\57-67

ethyl 5-(thiophen-2-yl)-1H-pyrazole-3-carboxylate (CAS 121195-03-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H10N2O2S and a molecular weight of 222.26400 g/mol. It is also known as ethyl 5-thien-2-yl-1H-pyrazole-3-carboxylate, ethyl 5-(2-thienyl)-1H-pyrazole-3-carboxylate and ethyl 3-(thien-2-yl)-1H-pyrazole-5-carboxylate. Key properties include a melting point of 138-140ºC, a boiling point of 430ºC at 760mmHg, a density of 1.306g/cm3 and a flash point of 213.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

121195-03-7

Jingsj CID

J-20326-3

Molecular Formula

C₁₀H₁₀N₂O₂S

Chinese Name

3-(噻吩-2-基)-1H-吡唑-5-羧酸乙酯

Molecular Weight

222.26400 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026