148927-60-0

Potent, non-peptide and orally active oxytocin receptor antagonist (IC 50 = 8.9 nM) that displays > 40-fold selectivity over vasopressin V 1a and V 2 receptors (IC 50 values are 370 and 570 nM respectively). Antagonizes oxytocin-induced uterine contractions in vitro and in vivo .