2,4-diamino-5-oxochromeno[2,3-b]pyridine-3-carbonitrile

2-[[4-(diethylamino)phenyl]methylidene]propanedinitrile

2-(pyridin-2-ylmethylidene)propanedinitrile

6,8-ditert-butyl-2-oxochromene-3-carbonitrile

2-[(2,4-dinitrophenyl)hydrazinylidene]propanedinitrile