117613-81-7 3(2H)-Pyridazinone, 5-(((3-butoxy-4-methoxyphenyl)methyl)amino)-4-chloro-6-ethoxy- 4-Chloro-5-(3-n-butoxy-4-methoxybenzylamino)-6-ethoxy-3(2H)-pyridazinone 5-(((3-Butoxy-4-methoxyphenyl)methyl)amino)-4-chloro-6-ethoxy-3(2H)-pyridazinone