1 0JJ 7-methoxy-N-{[6-(3-methyl-1,2-thiazol-5-yl)[1,2,4]triazolo[4,3-B]pyridazin-3-yl]methyl}-1,5-naphthyridin-4-amine 1.000 2 B2D 7-methoxy-N-[(6-phenyl[1,2,4]triazolo[4,3-B]pyridazin-3-yl)methyl]-1,5-naphthyridin-4-amine 0.812