1 4L5 2-methoxy-4-[6-(propan-2-ylamino)imidazo[1,2-B]pyridazin-3-yl]benzamide 1.000 2 4RB 4-(6-{[(1r)-1-(hydroxymethyl)propyl]amino}imidazo[1,2-B]pyridazin-3-yl)benzoic acid 0.778 3 K51 4-(6-{[(1s)-1-(hydroxymethyl)-2-methylpropyl]amino}imidazo[1,2-B]pyridazin-3-yl)benzonitrile 0.778