1-(2,4,6-Trichlorophenyl)-3-(4-nitroanilino)-2-pyrazolin-5-one 1-(2,4,6-Trichlorophenyl)-3-p-nitroanilino-2-pyrazolin-5-one 2-Pyrazolin-5-one, 3-(p-nitroanilino)-1-(2,4,6-trichlorophenyl)- (8CI) 2-Pyrazolin-5-one, 3-(p-nitroanilino)-l-(2,4,6-trichlorophenyl)- 3-(4-Nitroanilino)-1-(2,4,6-trichlorophenyl)-5-pyrazolone 34320-82-6 3H-Pyrazol-3-one, 2,4-dihydro-5-((4-nitrophenyl)amino)-2-(2,4,6-trichlorophenyl)- 82-80-4 BRN 0768445 EINECS 251-935-8 NSC 166498