1-Phenyl-3-(trifluoromethyl)-2-pyrazolin-5-one

1-苯基-3-(三氟甲基)-2-吡唑啉-5-酮

Also known as: 1-Phenyl-3-(trifluoromethyl)-4,5-dihydro-1H-pyrazol-5-one, 1-phenyl-3-trifluoromethyl-5-pyrazolone, 2-Phenyl-5-(trifluoromethyl)-2,4-dihydro-3H-pyrazol-3-one, 3-Trifluoromethyl-1-phenyl-2-pyrazolin-5-one, MFCD00051655

1-Phenyl-3-(trifluoromethyl)-2-pyrazolin-5-one (CAS 321-07-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H7F3N2O and a molecular weight of 228.17100 g/mol. It is also known as 1-Phenyl-3-(trifluoromethyl)-4,5-dihydro-1H-pyrazol-5-one, 1-phenyl-3-trifluoromethyl-5-pyrazolone and 2-Phenyl-5-(trifluoromethyl)-2,4-dihydro-3H-pyrazol-3-one. Key properties include a melting point of 195-196°C, a boiling point of 278.7ºC at 760mmHg, a density of 1.39g/cm3 and a flash point of 122.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

321-07-3

Jingsj CID

J-32293-9

Molecular Formula

C₁₀H₇F₃N₂O

Chinese Name

1-苯基-3-(三氟甲基)-2-吡唑啉-5-酮

Molecular Weight

228.17100 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026