2-(2,2-dimethyl-1,3-dihydropyrrol-4-yl)ethene-1,1,2-tricarbonitrile

4-oxohexane-1,1,2,2-tetracarbonitrile

4-oxooctane-1,1,2,2-tetracarbonitrile

4-oxodecane-1,1,2,2-tetracarbonitrile

3-methyl-4-oxopentane-1,1,2,2-tetracarbonitrile