5-Methyl-5-p-tolyl-1,4,5,6-tetrahydro-pyrazine-2,3-dicarbonitrile

5-(diethylamino)-6-methylpyrazine-2,3-dicarbonitrile

1,4,4a,5,6,8a-hexahydroquinoxaline-2,3-dicarbonitrile

2-amino-3-(2-phenylaziridin-1-yl)but-2-enedinitrile

2-amino-3-[2-(4-chlorophenyl)aziridin-1-yl]but-2-enedinitrile