5-Methyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one

5-甲基-2-苯基-1,2-二氢-3H-吡唑-3-酮

Also known as: 1,2-Dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one, 1-Phenyl-3-methyl-5-pyrazolone, 1-Phenyl-3-methyl-1H-pyrazole-5(2H)-one, 2-Phenyl-5-methyl-1,2-dihydro-3H-pyrazole-3-one, 2-Phenyl-5-methyl-1H-pyrazole-3(2H)-one, 3-Methyl-1-phenyl-5-pyrazolone, Edaravone Impurity 12

5-Methyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one (CAS 19735-89-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H10N2O and a molecular weight of 174.199 g/mol. It is also known as 1,2-Dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one, 1-Phenyl-3-methyl-5-pyrazolone and 1-Phenyl-3-methyl-1H-pyrazole-5(2H)-one. Key properties include a boiling point of 276.4±23.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 121.0±22.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

19735-89-8

Jingsj CID

J-1075845-0

Molecular Formula

C₁₀H₁₀N₂O

Chinese Name

5-甲基-2-苯基-1,2-二氢-3H-吡唑-3-酮

Molecular Weight

174.199 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026