Synonyms: Cuprate(3-), (5-(acetylamino)-4-(hydroxy-kappaO)-3-(2-(2-(hydroxy-kappaO)-5-methoxy-4-((2-(sulfooxy)ethyl)sulfonyl)phenyl)diazenyl-kappaN1)-2,7-naphthalenedisulfonato(5-))-, potassium sodium;Copper, (dihydrogen)(5-acetamino-4-hydroxy-3-((2-hydroxy-4-((2-hydroxyethyl)sulfonyl)-5-methoxy-phenyl)azo)-2,7-naphthalenedisulfonato(2-))-, mono(hydrogen sulfate) (ester), sodium potassium salts;Cuprate(3-), (5-(acetylamino)-4-hydroxy-3-((2-hydroxy-5-methoxy-4-((2-(sulfooxy)ethyl)sulfonyl)phenyl)azo)-2,7-naphthalenedisulfonato(5-))-, potassium sodium