NBQX Disodium (FG9202 disodium) is a highly selective, competitive AMPA receptor antagonist with neuroprotective and anticonvulsant activity. NBQX Disodium is a salt of NBQX. NBQX is a potent and selective AMPA/rhodosinate receptor antagonist that can be used to antagonize the excitatory toxicity of glutamate. It has anticonvulsant effects in rodent models.

NBQX, also known as FG9202, is an AMPA receptor antagonist. NBQX blocks AMPA receptors in micromolar concentrations (~10–20 µM) and also blocks kainate receptors. In experiments, it is used to counter glutamate excitotoxicity. NBQX was found to have anticonvulsant activity in rodent seizure models. As the disodium salt, NBQX is soluble in water at high concentrations (at least up to 100 mM).

NBQX (FG9202) is a potent, selective and competitive AMPA receptor antagonist. Neuroprotective and anticonvulsant; active in vivo.