63289-57-6 | Methanesulfonic acid, [[[4-[[4-(dimethylamino)phenyl]azo]phenyl]methyl]amino]oxo- | C16H18N4O4S |
63289-70-3 | Benzenesulfonic acid, 2-[[4-(dimethylamino)-2-[[[[6-[(sulfocarbonyl)amino]hexyl]amino]carbonyl ]amino]phenyl]azo]-, disodium salt | C22H30N6O8S2.2Na |