52218-73-2 6378-88-7 Benzo(a)phenazinium, 7-phenyl-5,9-bis(phenylamino)-4,10-disulfo-, hydroxide, inner salt, monosodium salt Benzo(a)phenazinium, 7-phenyl-5,9-bis(phenylamino)-4,10-disulfo-, inner salt, monosodium salt EINECS 228-955-0 Sodium 7-phenyl-5,9-bis(phenylamino)-4,10-disulphonatobenzo(a)phenazinium