3-Ethoxycarbonyl-5-hydroxy-1-sulfolanylpyrazole

1-环丁砜-3-乙氧羰基-5-羟基吡唑

Also known as: ethyl 5-hydroxy-1-(tetrahydro-3-thienyl)-1H-pyrazole-3-carboxylate S,S-dioxide, ethyl 1-(1,1-dioxidotetrahydrothiophen-3-yl)-5-hydroxy-1H-pyrazole-3-carboxylate, ethyl 1-(1,1-dioxothiolan-3-yl)-5-oxo-2H-pyrazole-3-carboxylate, 1H-Pyrazole-3-carboxylic acid, 5-hydroxy-1-(tetrahydro-1,1-dioxido-3-thienyl)-, ethyl ester, 3-[3-(Ethoxycarbonyl)-5-hydroxy-1H-pyrazol-1-yl]tetrahydrothiophene 1,1-dioxide, 3-Ethoxycarbonyl-5-Hydroxy-1-Sulfolanyl-Pyrazole, 3-Ethoxycarbonyl-5-hydroxy-1-sulphonylpyrazole, Einecs 257-577-9

3-Ethoxycarbonyl-5-hydroxy-1-sulfolanylpyrazole (CAS 51986-04-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H14N2O5S and a molecular weight of 274.294 g/mol. It is also known as ethyl 5-hydroxy-1-(tetrahydro-3-thienyl)-1H-pyrazole-3-carboxylate S,S-dioxide, ethyl 1-(1,1-dioxidotetrahydrothiophen-3-yl)-5-hydroxy-1H-pyrazole-3-carboxylate and ethyl 1-(1,1-dioxothiolan-3-yl)-5-oxo-2H-pyrazole-3-carboxylate. Key properties include a boiling point of 583.7±50.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 306.8±30.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

51986-04-0

Jingsj CID

J-1341185-3

Molecular Formula

C₁₀H₁₄N₂O₅S

Chinese Name

1-环丁砜-3-乙氧羰基-5-羟基吡唑

Molecular Weight

274.294 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026