描述:PB 28 dihydrochloride is a high affinity selective σ2 receptor Activators (Ki values are 0.8 and 15.2 nM for σ2 and σ1 receptors respectively) that displays minimal affinity at other receptors. PB 28 dihydrochloride inhibits electrically evoked twitch in guinea pig bladder and ileum (EC50 values are 2.62 and 3.96 μM respectively). PB 28 dihydrochloride also displays antiproliferative and cytotoxic effects in SK-N-SH neuroblastoma and C6 glioma cells.