2,7-Naphthalenedisulfonic acid, 5-(acetylamino)-3-((4-((3-(((4-(2,4-bis(1,1-dimethylpropyl)phenoxy)butyl)amino)carbonyl)-4-hydroxy-1-naphthalenyl)oxy)phenyl)azo)-4-hydroxy-, compd. with pyridine (1:2) 5-Acetamido-3-((4-((3-(((4-(2,4-di(tert-pentyl)phenoxy)butyl)amino)carbonyl)-4-hydroxy-1-naphthyl)oxy)phenyl)azo)-4-hydroxynaphthalene-2,7-disulphonic acid, compound with pyridine (1:2) 63217-29-8 EINECS 264-025-0