2,7-Naphthalenedisulfonic acid, 5-((4-chloro-6-phenyl-1,3,5-triazin-2-yl)amino)-4-hydroxy-3-(phenylazo)- 4-(4-Chloro-6-phenyl-1,3,5-triazin-2-yl)amino-5-hydroxy-6-phenylazo-2,7-naphthalenedisulfonic acid 64640-25-1 68092-51-3