bpV(phen) is an insulin receptor kinase (IRK) activator and an inhibitor of protein phosphotyrosine phosphatases with selectivity for PTEN, phosphatase and tensin homolog, a tumour suppressor phosphatase involved in cell cycle regulation. IC50 values for bpV(phen) are 38 nM for PTEN compared to 343 nM for PTPβ and 920 nM for PTP-1β. bpV(phen) has anti-inflammatory effects in oxidative stress including inhibitory effects on oxidative stress-induced cardiomyocyte injury that may be partially modulated by the action of ROS on PTEN. It may also be involved in differentiation.