3-Amino-4-[1-benzylamino-prop-(Z)-ylidene]-2-cyano-pent-2-enedinitrile

1,3-Dicyano-4,6-diethyl-6-methyl-2-oxo-cyclohex-3-enecarboxylic acid methyl ester

2,4-Diamino-4,6-diethyl-6-methyl-cyclohex-2-ene-1,1,3-tricarbonitrile

3-Amino-2-cyano-4-[1-methylamino-prop-(Z)-ylidene]-pent-2-enedinitrile

3-Amino-2-cyano-4-[1-ethylamino-prop-(Z)-ylidene]-pent-2-enedinitrile