N′-[(2-Chlorophenyl)sulfonyl]-1-(4-fluorophenyl)-4-oxo-1,4-dihydro-3-pyridazinecarbohydrazide

3-Pyridazinecarboxylic acid, 1-(4-fluorophenyl)-1,4-dihydro-4-oxo-, 2-[(2-chlorophenyl)sulfonyl]hydrazide

N′-[(2-Chlorophenyl)sulfonyl]-1-(4-fluorophenyl)-4-oxo-1,4-dihydro-3-pyridazinecarbohydrazide

N′-[(2-Chlorophényl)sulfonyl]-1-(4-fluorophényl)-4-oxo-1,4-dihydro-3-pyridazinecarbohydrazide

N′-[(2-Chlorphenyl)sulfonyl]-1-(4-fluorphenyl)-4-oxo-1,4-dihydro-3-pyridazincarbohydrazid

N′1-{[1-(4-fluorophenyl)-4-oxo-1,4-dihydropyridazin-3-yl]carbonyl}-2-chlorobenzene-1-sulfonohydrazide