Synonyms: | 2,7-Naphthalenedisulfonicacid, 3-[(2-arsonophenyl)azo]-4,5-dihydroxy-6-[(2-sulfophenyl)azo]- (9CI);2,7-Naphthalenedisulfonic acid,3-[(o-arsonophenyl)azo]-4,5-dihydroxy-6-[(o-sulfophenyl)azo]- (8CI);Benzenearsonic acid,o-[[1,8-dihydroxy-3,6-disulfo-7-[(o-sulfophenyl)azo]-2-naphthyl]azo]- (7CI); 2-(2-Arsonophenylazo)-1,8-dihydroxy(2-sulfophenylazo)-3,6-naphthalenedisulfonicacid; Orthanilic A |