156893-48-0 68683-42-1 8,18-Dichloro-5,15-diethyl-5,15-dihydrodiindolo(3,2-b:3',2'-m)triphenodioxazinetrisulphonic acid Diindolo(3,2-b:3',2'-m)triphenodioxazinetrisulfonic acid, 8,18-dichloro-5,15-diethyl-5,15-dihydro- EINECS 272-077-0