Water soluble, potent and selective AMPA/kainate receptor antagonist. For literature references, see NBQX (ALX-550-044). Alternative name: 2,3-Dihydroxy-6-nitro-7-sulphamoylbenzo(f)-quinoxaline . 2Na, 6-Nitro-7-sulphamoylbenzo(f)-quinoxaline-2,3-dione . 2Na. Purity: ≥98% (HPLC). Appearance: Red to brown solid. Solubility: Soluble in water (5mg/ml) or DMSO. Long Term Storage: -20°C.