966-62-1 Benzo[a]phenazoxonium, 9-(dimethylamino)-, chloride Benzo[a]phenoxazin-7-ium, 9-(dimethylamino)-, chloride Benzo[a]phenoxazinium, 9-(dimethylamino)-, chloride C.I. Basic Blue 6 NSC9291 Naphthol blue