25502-52-7 4,7-Methano-1H-isoindole-1,3(2H)-dione, 2,2'-(1,2-ethanediyl)bis(3a,4,7,7a-tetrahydro- EINECS 247-048-0 N,N'-(Ethylene)bis(1,2,3,,6-tetrahydro-3,6-methanophthalimide) N,N'-Ethylenebis(1,2,3,6-tetrahydro-3,6-endomethylenephthalimide)