98% Synonym: 4,5-Dichloro-3,6-dioxo-1,4-cyclohexadiene-1,2-dicarbonitrile, DDQ CAS Number: 84-58-2 Empirical Formula (Hill Notation) : C₈Cl₂N₂O₂ Molecular Weight: 227.00 Beilstein Registry Number: 747939 EC Number: 201-542-2 …