7-nitro-2,3-dioxo-1,4-dihydroquinoxaline-6-carbonitrile 2,3-diketo-7-nitro-1,4-dihydroquinoxaline-6-carbonitrile 115066-14-3 NCGC00024491-01 Tocris-0190 C13668 BPBio1_001232 NCGC00024491-02 ST5405216 ZINC00003668 AE-641/00585012 Biomol-NT_000200 6-CYANO-7-NITROQUINOXALINE-2,3-DIONE 6-Quinoxalinecarbonitrile, 1,2,3,4-tetrahydro-7-nitro-2,3-dioxo- CNQX Lopac0_000384 C127_SIGMA FG-9065