Synonym(s): CNQX, 6-Cyano-7-nitroquinoxaline-2,3(1H,4H)-dione Formula: C9H4N4O4 Formula weight: 232.16 Purity: 99+% CAS Number: 115066-14-3 Harmonized Tariff Code:  2933.59 Hazard Statements: H301-H315-H319-H335 Toxic if swallowed. Causes skin irritation. Causes serious eye…

A competitive, non-NMDA glutamate receptor antagonist (IC₅₀s = 0.3 and 1.5 μM for AMPA and kainate receptors, respectively, versus IC₅₀ = 25 μM for NMDA receptors).