abstract |
A compound of formula: n n n n n n n n n n wherein X is S or O and A, R 1 , R 2 , R 3 , R 4 , n, and m are disclosed herein, or a pharmaceutically acceptable salt thereof (a “Pyridazinylpiperazine Compound”), compositions comprising a Pyridazinylpiperazine Compound, and methods for treating or preventing pain, UI, an ulcer, IBD and IBS in an animal comprising administering to an animal in need thereof an effective amount of a Pyridazinylpiperazine Compound are disclosed herein. |