2-(4-fluorophenyl)-5-methyl-2,4-dihydro-3H-pyrazol-3-one

1-(4-氟苯基)-3-甲基-2-吡唑啉-5-酮

Also known as: 1-(4-Fluorophenyl)-3-methyl-2-pyrazolin-5-one, 1-(4-Fluorophenyl)-3-methyl-4,5-dihydro-1H-pyrazol-5-one, 1-(4-fluorophenyl)-3-methyl-1H-pyrazol-5(4H)-one, 2-(4-fluorophenyl)-5-methyl-4H-pyrazol-3-one, 2-(4-fluorophenyl)-2,4-dihydro-5-methyl-3H-Pyrazol-3-one, 3-methyl-1-(4-fluorophenyl)-2-pyrazolin-5-one, 3H-Pyrazol-3-one, 2-(4-fluorophenyl)-2,4-dihydro-5-methyl-

2-(4-fluorophenyl)-5-methyl-2,4-dihydro-3H-pyrazol-3-one (CAS 100553-83-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H9FN2O and a molecular weight of 192.19000 g/mol. It is also known as 1-(4-Fluorophenyl)-3-methyl-2-pyrazolin-5-one, 1-(4-Fluorophenyl)-3-methyl-4,5-dihydro-1H-pyrazol-5-one and 1-(4-fluorophenyl)-3-methyl-1H-pyrazol-5(4H)-one. Key properties include a melting point of 148-149ºC, a boiling point of 351.3ºC at 760 mmHg and a density of 1.26. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

100553-83-1

Jingsj CID

J-1066524-4

Molecular Formula

C₁₀H₉FN₂O

Chinese Name

1-(4-氟苯基)-3-甲基-2-吡唑啉-5-酮

Molecular Weight

192.19000 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026