AM9405 is a novel peripherally active cannabinoid type 1 (CB1) and serotonin type 3 receptor agonist. AM9405 inhibits twitch contraction of the ileum and the colon with IC 50 s of 45.71 and 0.076 nM, respectively. AM9405 significantly slowed mouse intestinal motility in physiological conditions. Moreover, AM9405 reversed hypermotility and reduced pain in mouse models mimicking symptoms of functional GI disorders, such as stress-induced diarrhea and writhing test.

CB1:45.71 nM, 5-HT3 receptor:0.076 nM