4-(2-Chloroacetyl)-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one

4-(2-氯乙酰基)-1,5-二甲基-2-苯基-1,2-二氢-3H-吡唑-3-酮

Also known as: 4-(2-CHLOROACETYL)-ANTIPYRINE, 4-(2-Chloroacetyl)-1,5-dimethyl-2-phenylpyrazol-3-one, 4-(Chloroacetyl)-1,2-dihydro-1,5-dimethyl-2-phenyl-3H-pyrazol-3-one, 1-Phenyl-2,3-dimethyl-4-(chloroacetyl)-3-pyrazoline-5-one, 4-(α-Chloroacetyl)antipyrine, 4-chloroacetyl-1-phenyl-2,3-dimethyl-3-pyrazolin-5-one, 4-chloroacetylantipirine, 3H-Pyrazol-3-one, 4-(2-chloroacetyl)-1,2-dihydro-1,5-dimethyl-2-phenyl-, 4-(2-CHLORO-ACETYL)-1,5-DIMETHYL-2-PHENYL-1,2-DIHYDRO-PYRAZOL-3-ONE

4-(2-Chloroacetyl)-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one (CAS 6630-73-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C13H13ClN2O2 and a molecular weight of 264.70800 g/mol. It is also known as 4-(2-CHLOROACETYL)-ANTIPYRINE, 4-(2-Chloroacetyl)-1,5-dimethyl-2-phenylpyrazol-3-one and 4-(Chloroacetyl)-1,2-dihydro-1,5-dimethyl-2-phenyl-3H-pyrazol-3-one. Key properties include a boiling point of 379.7ºC at 760 mmHg, a density of 1.301g/cm3 and a flash point of 183.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

6630-73-5

Jingsj CID

J-966444-3

Molecular Formula

C₁₃H₁₃ClN₂O₂

Chinese Name

4-(2-氯乙酰基)-1,5-二甲基-2-苯基-1,2-二氢-3H-吡唑-3-酮

Molecular Weight

264.70800 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026