Synonyms: 5-Norbornene-2,3-dicarboxylicacid, diethyl ester, endo-2,exo-3- (8CI); Bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylicacid, diethyl ester, (1R,2S,3S,4S)-rel- (9CI);Bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid, diethyl ester, (2-endo,3-exo)-;Diethyl (endo,exo)-bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylate; NSC 69976