Synonyms: Amaranth;2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-((4-sulfo-1-naphthalenyl)azo)-, trisodium salt;3-Hydroxy-4-((4-sulfo-1-naphthalenyl)azo)-2,7-naphthalenedisulfon- ic acid, trisodium salt;1-(4-Sulfo-1-naphthylazo)-2-naphthol-3,6-disulfonic acid trisodium salt;2-Hydroxy-1,1'-azonaphthalene-3,6,4'-trisulfonic acid trisodium salt;Acetacid Red 2BR;Acid Amaranth N;Bordeaux S;C.I. Acid Red 27;