Synonyms: Triphenodioxazinedisulfonic acid, 6,13-dichloro-3,10-bis((4-((4,6-dichloro-1,3,5-triazin-2-yl)amino)sulfophenyl)amino)-, sodium salt (1:4);6,13-Dichloro-3,10-bis((4-((4,6-dichloro-1,3,5-triazin-2-yl)amino)sulfophenyl)amino)triphenodioxazinedisulfonic acid, tetrasodium salt;Tetrasodium 6,13-dichloro-3,10-bis((4-((4,6-dichloro-1,3,5-triazin-2-yl)amino)sulphonatophenyl)amino)triphenodioxazinedisulphonate;Triphenodioxazinedisulfonic acid, 6,13-dichloro-3,10-bis((4-((4,6-dichloro-1,3,5-triazin-2-yl)amino)sulfophenyl)amino)-, tetrasodium salt;tetrasodium 6,13-dichloro-3,10-bis({4-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-3-sulfonatophenyl}amino)[1,4]benzoxazino[2,3-b]phenoxazine-2,9-disulfonate