Synonyms: Canacert IndigoCarmine;Carmine Blue;Disodium 5,5'-indigotin disulfonate;DolkwalIndigo Carmine;Indigotine Carmine;Indigotine Extra Pure A;Indigotine disodiumsalt;Indocarmine F;Intense Blue;Japan Blue 2;Mitsui Indigo Carmine;San-ei Indigo Carmine;Sodium 5,5'-indigotindisulfonate;1H-Indole-5-sulfonicacid, 2-(1,3-dihydro-3-oxo-5-sulfo-2H-indol-2-ylidene)-2,3-dihydro-3-oxo-,disodium salt (9CI);C.I. Acid Blue 74 (6CI);[D2,2'-Biindoline]-5,5'-disulfonic acid, 3,3'-dioxo-,disodium salt (8CI);5,5'-Indigodisulfonic acid disodiumsalt;Amacid Brilliant Blue;