2,4-dihydro-2,5-diphenyl-3H-pyrazol-3-one

2,4-二氢-2,5-二苯基-3H-吡唑啉-3-酮

Also known as: 1,3-diphenyl-1H-pyrazol-5(4H)-one, 1,3-diphenyl-4,5-dihydro-1H-pyrazol-5-one, 1,3-diphenyl-2-pyrazolin-5-one, 1,3-diphenyl-5-oxo-4,5-dihydro-1H-pyrazole, 2,5-diphenyl-2,4-dihydro-3H-pyrazol-3-one, 2,5-diphenyl-4H-pyrazol-3-one, 1,3-diphenyl-1,4-dihydropyrazol-5-one, 1,3-diphenyl-4,5-dihydropyrazol-5-one, 2-Pyrazolin-5-one,1,3-diphenyl

2,4-dihydro-2,5-diphenyl-3H-pyrazol-3-one (CAS 4845-49-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C15H12N2O and a molecular weight of 236.26900 g/mol. It is also known as 1,3-diphenyl-1H-pyrazol-5(4H)-one, 1,3-diphenyl-4,5-dihydro-1H-pyrazol-5-one and 1,3-diphenyl-2-pyrazolin-5-one. Key properties include a melting point of 137-138℃, a boiling point of 368.7ºC at 760mmHg, a density of 1.17g/cm3 and a flash point of 176.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

4845-49-2

Jingsj CID

J-7645-2

Molecular Formula

C₁₅H₁₂N₂O

Chinese Name

2,4-二氢-2,5-二苯基-3H-吡唑啉-3-酮

Molecular Weight

236.26900 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026