5-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-4-hydroxy-3-[(1-sulpho-2-naphthyl)azo]naphthalene-2,7-disulphonic acid

5-[(4,6-Dichloro-1,3,5-triazin-2-yl)amino]-4-hydroxy-3-[(1-sulfo-2-naphthalenyl)azo]-2,7-naphthalenedisulfonic acid

2-(1-Sulfonaphthalene-2-ylazo)-1-hydroxy-8-[(4,6-dichloro-1,3,5-triazine-2-yl)amino]naphthalene-3,6-bissulfonic acid