3-(Bicyclo(2.2.1)hept-2-ylidene)butanenitrile 3-Bicyclo(2.2.1)hept-2-ylidenebutyronitrile 72928-05-3 Butanenitrile, 3-bicyclo(2.2.1)hept-2-ylidene- EINECS 277-047-0