Synonyms: Cuprate(3-), (3-(2-(5-chloro-2-hydroxy-4-sulfophenyl)diazenyl)-6-(((2,3-dichloro-6-quinoxalinyl)carbonyl)amino)-4-hydroxy-2,7-naphthalenedisulfonato(5-))-, potassium sodium;3-(((2,3-Dichloro-6-quinoxalyl)carbonyl)amino)-6-((5-chloro-2-hydroxy-4-sulfophenyl)azo)-5-hydroxy-2,7-naphthalenedisulfonic acid, (1:1) copper complex, potassium, sodium salt;Cuprate(3-), (3-((5-chloro-2-hydroxy-4-sulfophenyl)azo)-6-(((2,3-dichloro-6-quinoxalinyl)carbonyl)amino)-4-hydroxy-2,7-naphthalenedisulfonato(5-))-, potassium sodium