2,3-Norbornanedicarboxylic anhydride, 5,6-dibromo- 4,7-Methanoisobenzofuran-1,3-dione, 5,6-dibromohexahydro- 5,6-Dibromo-2,3-norbornanedicarboxylic anhydride 5,6-Dibromohexahydro-4,7-methanoisobenzofuran-1,3-dione 5455-81-2 NSC6139