| Description | Potent and selective, competitive motilin receptor antagonist (IC50 = 4.9 nM). Selective for the motilin receptor over a range of other receptors and ion channels. Inhibits motilin-induced duodenal muscle contractions in vitro. Also inhibits motilin-induced colonic and abdominal contractions in vivo. Orally active. Purity 98%. MW (observed): 556.71 |