2,7-Naphthalenedisulfonic acid,3-hydroxy-4-[[4'-[[1-hydroxy-7-(phenylamino)-3-sulfo-2-naphthalenyl]azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-,trisodium salt

2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-[[4'-[[1-hydroxy-7-(phenylamino)-3-sulfo-2-naphthalenyl]azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-, trisodium salt

3-Hydroxy-4-[2-[4'-[2-[1-hydroxy-7-(phenylamino)-3-sulfo-2-naphthalenyl]diazenyl]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]diazenyl]-2,7-naphthalenedisulfonic acid sodium salt