Synonyms:
4-hydroxy-3-[4'-(4-hydroxyphenylazo)-2,2'-dimethyl-4-biphenylylazo]-2,7-naphthalenedisulfonic acid disodium salt ; 2,7-naphthalenedisulfonicacid,4-hydroxy-3-[2-[4'-[2-(4-hydroxyphenyl)diazenyl]-2,2'-dimethyl[1,1'-biphenyl]-4-yl]diazenyl]-,sodium salt (1:2) ; 2,7-naphthalenedisulfonicacid,4-hydroxy-3-[[4'-[(4-hydroxyphenyl)azo]-2,2'-dimethyl[1,1'-biphenyl]-4-yl]azo]-,disodium salt (9ci) ; disodium 4-hydroxy-3-[[4'-[(4-hydroxyphenyl)azo]-2,2'-dimethyl[1,1'-biphenyl]-4-yl]azo]naphthalene-2,7-disulphonate
