Synonyms: 1,6-Naphthalenedisulfonicacid,8-[[1,8-dihydroxy-7-[(2-hydroxy-5-nitro-3-sulfophenyl)azo]-3,6-disulfo-2-naphthalenyl]azo]-(9CI); 2,7-Naphthalenedisulfonic acid,3-[(3,8-disulfo-1-naphthyl)azo]-4,5-dihydroxy-6-[(2-hydroxy-5-nitro-3-sulfophenyl)azo]-(8CI); Sulfonitrophenol AE