Synonyms: 4,5-Dihydro-5-methyl-6-[3-nitro-4-[(phenylmethyl)amino]phenyl]-3(2H)-pyridazinone;6-(4-Benzylamino-3-nitrophenyl)-5-methyl-2,3,4,5-tetrahydropyridazin-3-one;6-(4-BenzylaMino-3-nitrophenyl)-5-Methyl-2,3,4,5;6-(4-benzylaMino-3-nitrophenyl)-5-Methyl-2H-pyridazin-3-one;3(2H)-Pyridazinone, 4,5-dihydro-5-Methyl-6-[3-nitro-4-[(phenylMethyl)aMino]phenyl]-;6-(4-(BenzylaMino)-3-nitrophenyl)-5-Methyl-4,5-dihydropyridazin-3(2H)-one