CNQX disodium salt is widely used in neuroscience research as a potent and selective antagonist of AMPA and kainate receptors. It plays a crucial role in studying excitatory synaptic transmission in the central nervous system. Researchers utilize it to block glutamate-mediated responses, helping to understand the mechanisms of synaptic plasticity, neuronal signaling, and excitotoxicity. It is also employed in electrophysiological experiments to isolate NMDA receptor-mediated currents by inhibiting AMPA/kainate receptor activity. Additionally, CNQX disodium salt is applied in studies related to neurodegenerative diseases, epilepsy, and brain injury, providing insights into the role of glutamate receptors in these conditions. Its ability to modulate excitatory neurotransmission makes it a valuable tool in both in vitro and in vivo experimental models.