2,3-DIOXO-6-NITRO-1,2,3,4-TETRAHYDROBENZO[F]QUINOXALINE-7-SULFONAMIDE DISODIUM SALT 2,3-DIHYDROXY-6-NITRO-7-SULPHAMOYLBENZO(F)-QUINOXALINE 2NA 1,2,3,4-TETRAHYDRO-6-NITRO-2,3-DIOXO-BENZO[F]QUINOXALINE-7-SULFONAMIDE DISODIUM 6-NITRO-7-SULFAMOYLBENZO[F]QUINOXALINE-2,3-DIONE, DISODIUM SALT 6-NITRO-7-SULPHAMOYLBENZO(F)-QUINOXALINE-2,3-DIONE 2NA FG 9202 DISODIUM NBQX DISODIUM NBQX DISODIUM SALT