[(2-Chlorophenyl)methylene]malononitrile, o-Chlorobenzylidenemalonic nitrile, 2-Chlorobenzylidenemalononitrile, (o-Chlorobenzylidene)malononitrile, ortho-chlorobenzalmalononitrile, CS (lacrimator), Alonitrile, o-Chlorobenzalmalononitrile, 2-(2-chlorophenylmethylene)malononitrile, 2-Chlorobmn, 2-(2-chlorophenyl)-1,1-dicyanoethylene, ortho-chlorophenylmethylene-malononitrile, Propanedinitrile, ((2-chlorophenyl)methylene)-, 2-(2-Chlorobenzylidene)malononitrile, 2-CHLOROBENZALMALONONITRILE