(2,3,6,7-Tetrahydro-1H,5H-benzo(ij)quinolizin-9-ylmethylene)malononitrile 2-(9-Julolidyl)-1,1-dicyanoethylene 5-22-04-00276 (Beilstein Handbook Reference) 58293-56-4 9-(Dicyanovinyl)julolidine BRN 0240710 MALONONITRILE, (2,3,6,7-TETRAHYDRO-1H,5H-BENZO(ij)QUINOLIZIN-9-YLMETHYLENE)-