4-[4-[4-(dimethylamino)phenyl]buta-1,3-diynyl]-N,N-dimethylaniline

3-chloro-3-[4-(dimethylamino)phenyl]prop-2-enal

p-dimethylamino-α-chlorostyrene

1-[4-(dimethylamino)phenyl]-3-thiophen-2-ylprop-2-en-1-one

(NZ)-N-[1-[4-(dimethylamino)phenyl]ethylidene]hydroxylamine