Houghton, L. A., et al. Zamifenacin (UK-76,654), a potent gut M3 selective muscarinic antagonist, reduces colonic motor activity in patients with irritable bowel syndrome. Aliment. Pharmacol. Ther, 1997, 11(3), 561-568.
Chemical Name: (R)-3-Benzhydryloxy-1-(2-benzo[1,3]dioxol-5-yl-ethyl)-piperidine fumarate