4582-21-2 5-Norbornene-2,3-dicarbonyl chloride, trans- Bicyclo[2.2.1]hept-5-ene-2,3-dicarbonyl dichloride, (2-endo,3-exo)- NSC103156 WLN: L55 A CUTJ FVG GVG -T trans-Bicyclo[2.2.1]hept-5-enyl-2,3-dicarbonylchloride