Synonyms: 1-Naphthol-3,6-disulfonicacid, 7-amino- (6CI);1-Hydroxy-3,6-disulfo-7-aminonaphthalene;2-Amino-8-hydroxynaphthalene-3,6-disulfonic acid;2-Amino-8-naphthol-3,6-disulfonic acid;2R acid;3-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid;6-Amino-4-naphthol-2,7-disulfonic acid;7-Amino-1-hydroxy-3,6-naphthalenedisulfonic acid;7-Amino-1-naphthol-3,6-disulfonic acid;Gamma disulfo acid;NSC 10435;NSC7560;RR acid;