2,5-Cyclohexadiene-1,4-diimine, 2-chloro-N,N'-dibromo- 4-07-00-02079 (Beilstein Handbook Reference) 90932-84-6 BRN 3254240 N,N'-Dibromo-2-chloro-2,5-cyclohexadiene-1,4-diimine NSC 344499