tetrasodium 3,3'-[(3,3'-dimethoxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[5-(acetylamino)-4-hydroxynaphthalene-2,7-disulphonate] | Tetranatrium-3,3'-[(3,3'-dimethoxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[5-(acetylamino)-4-hydroxynaphthalin-2,7-disulfonat] | 67906-44-9 |