two new quinoxalines , dnqx ( 6,7-dinitro-quinoxaline-2,3-dion = fg 9041 ) and cnqx ( 6-nitro-7-cyano-quinoxaline-2,3-dion = fg 9065 ) , were tested as antagonists of excitatory amino acid responses in cultured neurons and brain slices .
C0034437
quinoxalines
C0099122
cnqx