| InChI: | InChI=1/C27H29NO3.C4H4O4/c1-3-8-22(9-4-1)27(23-10-5-2-6-11-23)31-24-12-7-16-28(19-24)17-15-21-13-14-25-26(18-21)30-20-29-25;5-3(6)1-2-4(7)8/h1-6,8-11,13-14,18,24,27H,7,12,15-17,19-20H2;1-2H,(H,5,6)(H,7,8)/b;2-1+/t24-;/m1./s1 |
| Biological Activity: | Selective M 3 muscarinic receptor antagonist (pK i values are 8.52, 7.93, 7.90 and 7.78 for M 3 , M 2 , M 1 and M 4 receptors respectively). Displays higher affinity at ileal M 3 receptors (pK i = 9.3) compared to oesophageal and tracheal M 3 receptors (pK i values are 8.8 and 8.2 respectively). In vivo, inhibits gastrointestinal motility in the absence of cardiovascular effects. |
