2-Norbornene, 5-vinyl- 2-Vinyl-5-norbornene 2-Vinylbicyclo(2.2.1)hept-5-ene 2-Vinylnorbornene 3048-64-4 5-Vinyl-2-norbornene 5-Vinylbicyclo(2.2.1)hept-2-ene 5-Vinylnorborn-2-ene 5-Vinylnorbornene BRN 1903874 Bicyclo(2.2.1)hept-2-ene, 5-ethenyl- EINECS 221-259-8 HSDB 6336 NSC 61529 VINYLNORBORNENE Vinylnorbornene (VAN)