3-[[4-[[5-cyano-6-[(2-hydroxyethyl)amino]-4-methyl-2-[[2-(4-sulphophenyl)ethyl]amino]-3-pyridyl]azo]-2,5-xylyl]azo]benzenesulphonic acid, sodium salt

Benzenesulfonic acid, 3-[[4-[[5-cyano-6-[(2-hydroxyethyl)amino]-4-methyl-2-[[2-(4-sulfophenyl)ethyl]amino]-3-pyridinyl]azo]-2,5-dimethylphenyl]azo]-, sodium salt

3-[[4-[[5-Cyano-6-[(2-hydroxyethyl)amino]-4-methyl-2-[[2-(4-sulfophenyl)ethyl]amino]-3-pyridinyl]azo]-2,5-dimethylphenyl]azo]benzenesulfonic acid/sodium,(1:x) salt