1,1'-Carbonyldiimidazole 1-Oxomethylenebis(N-imidazole) 1H-Imidazole, 1,1'-carbonylbis- 530-62-1 Carbonyl diimidazole Carbonyldiimidazole Diimidazol-1-yl ketone Imidazole, 1,1'-carbonyldi- N,N'-Carbonylbis(imidazole) N,N'-Carbonyldiimidazole N,N-Carbonyldiimidazole NSC67203