DL-AP5 from Cayman Chemical

The racemic version of the selective NMDA receptor antagonist, D-AP5 that competitively inhibits the glutamate binding site of NMDA receptors (Kd = 1.4 µM); D-AP5 is the active (−)-stereoisomer, while L-AP5, the(+)-isomer, demonstrates considerably less potent NMDA receptor antagonist activity