4-Butyl-3-hydroxy-1-(4-hydroxyphenyl)-2-phenyl-3-pyrazolin-5-one

4-丁基-3-羟基-1-(4-羟基苯基)-2-苯基-3-吡唑啉-5-酮

Also known as: 4-BUTYL-5-HYDROXY-2-(4-HYDROXYPHENYL)-1-PHENYL-1H-PYRAZOL-3(2H)-ONE, 3H-Pyrazol-3-one, 4-butyl-1,2-dihydro-5-hydroxy-2-(4-hydroxyphenyl)-1-phenyl-, 4-butyl-5-hydroxy-1-(4-hydroxyphenyl)-2-phenyl-3-pyrazolone, 4-butyl-5-hydroxy-1-(4-hydroxyphenyl)-2-phenyl-pyrazol-3-one, 4-butyl-5-hydroxy-1-(4-hydroxyphenyl)-2-phenylpyrazol-3-one, oxyphenbutazone

4-Butyl-3-hydroxy-1-(4-hydroxyphenyl)-2-phenyl-3-pyrazolin-5-one (CAS 975-18-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C19H20N2O3 and a molecular weight of 324.37400 g/mol. It is also known as 4-BUTYL-5-HYDROXY-2-(4-HYDROXYPHENYL)-1-PHENYL-1H-PYRAZOL-3(2H)-ONE, 3H-Pyrazol-3-one, 4-butyl-1,2-dihydro-5-hydroxy-2-(4-hydroxyphenyl)-1-phenyl- and 4-butyl-5-hydroxy-1-(4-hydroxyphenyl)-2-phenyl-3-pyrazolone. Key properties include a boiling point of 503.9ºC at 760 mmHg and a density of 1.292. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

975-18-8

Jingsj CID

J-1057580-6

Molecular Formula

C₁₉H₂₀N₂O₃

Chinese Name

4-丁基-3-羟基-1-(4-羟基苯基)-2-苯基-3-吡唑啉-5-酮

Molecular Weight

324.37400 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026