3-Amino-1-(2,4,6-trichlorophenyl)-1H-pyrazol-5(4H)-one

3-氨基-1-(2,4,6-三氯苯基)-1H-吡唑-5(4H)-酮

Also known as: 3-amino-1-(2,4,6-trichlorophenyl)-2-pyrazolin-5-one, 3-amino-1-(2,4,6-trichlorophenyl)-5-pyrazolone, 5-amino-2-(2,4,6-trichlorophenyl)-2,4-dihydro-3H-pyrazol-3-one, 1-(2,4,6-trichlorophenyl)-3-amino-pyrazolin-5-one, 1-(2,4,6-trichlorophenyl)-3-amino-2-pyrazoline-5-one, 1-(2,4,6-trichlorophenyl)-3-anilinopyrazolone, NSC 113482, 2-pyrazolin-5-one, 3-amino-1-(2,4,6-trichlorophenyl)-, 5-amino-2-(2,4,6-trichlorophenyl)-4H-pyrazol-3-one, 5-amino-2-(2,4,6-trichlorophenyl)-2,4-dihydro-3H-pyrazol-3-one, 5-amino-2-(2,4,6-trichloro-phenyl)-2,4-dihydro-pyrazol-3-one, 3-amino-1-(2,4,6-trichlorophenyl)-4,5-dihydro-1H-pyrazol-5-one, 3H-pyrazol-3-one, 5-amino-2,4-dihydro-2-(2,4,6-trichlorophenyl)-, 5-amino-2-(2,4,6-trichlorophenyl)-3-pyrazol-2-iumone

3-Amino-1-(2,4,6-trichlorophenyl)-1H-pyrazol-5(4H)-one (CAS 27241-31-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H6Cl3N3O and a molecular weight of 278.52200 g/mol. It is also known as 3-amino-1-(2,4,6-trichlorophenyl)-2-pyrazolin-5-one, 3-amino-1-(2,4,6-trichlorophenyl)-5-pyrazolone and 5-amino-2-(2,4,6-trichlorophenyl)-2,4-dihydro-3H-pyrazol-3-one. Key properties include a melting point of 218 °C (dec.)(lit.), a boiling point of 397.9ºC at 760mmHg, a density of 1.626g/cm3 and a flash point of 194.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

27241-31-2

Jingsj CID

J-38342-0

Molecular Formula

C₉H₆Cl₃N₃O

Chinese Name

3-氨基-1-(2,4,6-三氯苯基)-1H-吡唑-5(4H)-酮

Molecular Weight

278.52200 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026