BMS-191095 is an activators of mitochondrial ATP-sensitive potassium (mitoKATP) channels. Target: potassium channel in vitro: BMS-191095 induces mitochondrial-depolarization and vasodilation. BMS-191095 elicites a dose-dependent vasodilation in endothelium denuded cerebral arteries with 8.1 ± 2.3%, 31.6 ± 2.1%, and 39.5 ± 3.2% relaxation in response to 10, 50, and 100 μM, respectively. in vivo: In normal rats, BMS-191095-induced vasodilation was mediated by mitochondrial depolarization and calcium sparks generation in VSM and was reduced by inhibition of BKCa channels.