(E)-3-((4-(dimethylamino)phenyl)imino)indolin-2-one
methylene blue
1-(4-(dimethylamino)phenyl)-3-methyl-1H-imidazo[4,5-c]quinolin-2(3H)-one
1-(4-(dimethylamino)phenyl)-3-methyl-8-(pyridin-4-yl)-1H-imidazo[4,5-c]quinolin-2(3H)-one
1-(4-(dimethylamino)phenyl)-8-iodo-3-methyl-1H-imidazo[4,5-c]quinolin-2(3H)-one