3-tert-Butyl-1-methyl-2-pyrazolin-5-one

3-叔-丁基-1-甲基-2-吡唑啉-5-酮

Also known as: 3-tert-Butyl-1-methyl-2-pyrazolin-5-one, 5-(tert-Butyl)-2-methyl-2,4-dihydro-3H-pyrazol-3-one, 3H-Pyrazol-3-one, 5-(1,1-dimethylethyl)-2,4-dihydro-2-methyl-, 5-tert-butyl-2-methyl-4H-pyrazol-3-one, 3-tert-Butyl-1-methyl-1H-pyrazol-5(4H)-one, MFCD00051761

3-tert-Butyl-1-methyl-2-pyrazolin-5-one (CAS 87031-30-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H14N2O and a molecular weight of 154.21000 g/mol. It is also known as 5-(tert-Butyl)-2-methyl-2,4-dihydro-3H-pyrazol-3-one, 3H-Pyrazol-3-one, 5-(1,1-dimethylethyl)-2,4-dihydro-2-methyl- and 5-tert-butyl-2-methyl-4H-pyrazol-3-one. Key properties include a melting point of 150-152ºC, a boiling point of 200.2ºC at 760 mmHg, a density of 1.04g/cm3 and a flash point of 74.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

87031-30-9

Jingsj CID

J-15004-0

Molecular Formula

C₈H₁₄N₂O

Chinese Name

3-叔-丁基-1-甲基-2-吡唑啉-5-酮

Molecular Weight

154.21000 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026