Description_x000D_ Biochem/physiol Actions_x000D_ CX614 (BDP-37) is a brain-penetrant class I ampakine (benzoxazine subgroup of benzamide-type) with AMPA receptor (AMPAR; iGluR) positive allosteric modulator (PAM) activity via targeting a binding site shared by cyclothiazide (CTZ), but distinct from that of GYKI 52466. CX614 enhances field excitatory postsynaptic potentials (amplitude & duration) in rat hippocampal slices and autaptically evoked excitatory postsynaptic currents in neuronal cultures (EC50 of 20-40 μM) by blocking desensitization and slowing deactivation of responses to glutamate. CX614 is also widely employed for studying AMPAR-mediated physiological responses in vivo (1-10 mg/kg n rats and mice via i.p.).