2888-90-6 3-09-00-00300 (Beilstein Handbook Reference) 5-Norbornene-2-carbonitrile, endo- AI3-05928 BRN 3195856 Bicyclo(2.2.1)hept-5-ene-2-carbonitrile, endo- NSC 46416 endo-2-Cyanobicyclo(2-2-1)hept-5-ene