[3-(Dimethylamino-methyleneamino)-2,4,6-triiodo-benzoylamino]-acetic acid
3-{Allyl-[3-(dimethylamino-methyleneamino)-2,4,6-triiodo-benzoyl]-amino}-propionic acid
3-{Allyl-[3-(dimethylamino-methyleneamino)-2,4,6-triiodo-benzoyl]-amino}-propionic acid methyl ester
3-{[3-(Dimethylamino-methyleneamino)-2,4,6-triiodo-benzoyl]-isopropyl-amino}-propionic acid
6-[3-(Dimethylamino-methyleneamino)-2,4,6-triiodo-benzoylamino]-hexanoic acid methyl ester