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https://www.draeger.com/th_th/Substances/1666 Dipyrido[1,2-a:2',1'-c]pyrazinediium | C12H10N2+2 | 231-36-7 Dipyrido[1,2-a:2',1'-c]pyrazinediium | C12H10N2+2 1 2 a c c12h10n2 231 36