1-(3,4-Dichlorophenyl)-3-methyl-5-pyrazolone

1-(3,4-二氯苯基)-3-甲基-5-吡唑啉酮

Also known as: 1-(3,4-Dichlorophenyl)-3-methyl-5(4H)-pyrazolone, 1-(3,4-dichlorophenyl)-3-methyl-1H-pyrazol-5(4H)-one, 2-(3,4-dichlorophenyl)-2,4-dihydro-5-methyl-3H-pyrazol-3-one, 2-(3,4-dichlorophenyl)-5-methyl-4H-pyrazol-3-one, EINECS 236-055-4

1-(3,4-Dichlorophenyl)-3-methyl-5-pyrazolone (CAS 13124-17-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H8Cl2N2O and a molecular weight of 243.08900 g/mol. It is also known as 1-(3,4-Dichlorophenyl)-3-methyl-5(4H)-pyrazolone, 1-(3,4-dichlorophenyl)-3-methyl-1H-pyrazol-5(4H)-one and 2-(3,4-dichlorophenyl)-2,4-dihydro-5-methyl-3H-pyrazol-3-one. Key properties include a boiling point of 426.8ºC at 760 mmHg, a density of 1.45g/cm3 and a flash point of 211.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

13124-17-9

Jingsj CID

J-1093335-4

Molecular Formula

C₁₀H₈Cl₂N₂O

Chinese Name

1-(3,4-二氯苯基)-3-甲基-5-吡唑啉酮

Molecular Weight

243.08900 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026