Bispyrazolone

双吡唑酮

Also known as: Bis-pyrazolone, 3,3'-Dimethyl-1,1'-diphenyl[4,4'-bi-2-pyrazoline]-5,5'-dione, 4,4'-Bis(1-phenyl-3-methyl-5-pyrazolone), 4,4'-Bis-(1-phenyl-3-methyl-2-pyrazolin-5-one), Bis(3-methyl-1-phenyl-5-pyrazolone), Bis(1-phenyl-3-methyl-5-pyrazolone), [4,4'-Bi-3H-pyrazole]-3,3'-dione, 2,2',4,4'-tetrahydro-5,5'-dimethyl-2,2'-diphenyl-, Edaravone dimer, Edaravone related substance A, MFCD00020765

Bispyrazolone (CAS 7477-67-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C20H18N4O2 and a molecular weight of 346.383 g/mol. It is also known as Bis-pyrazolone, 3,3'-Dimethyl-1,1'-diphenyl[4,4'-bi-2-pyrazoline]-5,5'-dione and 4,4'-Bis(1-phenyl-3-methyl-5-pyrazolone). Key properties include a melting point of 355 °C, a boiling point of 585.1±50.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 307.6±30.1 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

7477-67-0

Jingsj CID

J-27100-0

Molecular Formula

C₂₀H₁₈N₄O₂

Chinese Name

双吡唑酮

Molecular Weight

346.383 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026