97416-92-7 EINECS 306-841-2 Tetrahydrogen (3-((8-((4-chloro-6-(o-toluidino)-1,3,5-triazin-2-yl)amino)-1-hydroxy-3,6-disulpho-2-naphthyl)azo)-4-hydroxynaphthalene-1,5-disulphonato(6-))cuprate(4-)