1 NNL N-[2-(4-chlorophenyl)ethyl]-6-methyl[1,2,4]triazolo[4,3-B]pyridazin-8-amine 1.000 2 28C 4-{2-[(6-methyl[1,2,4]triazolo[4,3-B]pyridazin-8-yl)amino]ethyl}phenol 0.905