1 XNH (3~{R})-4-[2-[4-[1-(3-methoxy-[1,2,4]triazolo[4,3-B]pyridazin-6-yl)piperidin-4-yl]phenoxy]ethyl]-1,3-dimethyl-piperazin-2-one 1.000 2 ETU (3r)-4-(2-{4-[1-(3-chloro[1,2,4]triazolo[4,3-B]pyridazin-6-yl)-4-piperidinyl]phenoxy}ethyl)-1,3-dimethyl-2-piperazinone 0.917