Synonyms: EXO-3,6-EPOXY-1,2,3,6-TETRAHYDROPHTHALIC ANHYDRIDE;EXO-7-OXABICYCLO[2.2.1]HEPT-5-ENE-2,3-DICARBOXYLIC ANHYDRIDE;EXO-7-OXABICYCLO[2.2.1]HEPTENE-2,3-DICARBOXYLIC ANHYDRIDE;5,6-DEHYDRONORCANTHARIDIN;7-OXABICYCLO[2.2.1]HEPT-5-ENE-2,3-DICARBOXYLIC ANHYDRIDE;endo-3,6-Epoxy-1,2,3,6-tetrahydrophthalic anhydride,98%