(-)-MK 801 Maleate

(-)-MK 801 maleate is the less active enantiomer, shown to be 10-fold less potent than (+)-MK 801 maleate (sc-203137); (-)-MK 801 maleate acts as a potent, selective, and non-competitive NMDA receptor antagonist. It acts by binding to a site located within the NMDA associated ion channel.