Synonyms: Cuprate(2-),[4-(hydroxy-kO)-5-[[2-(oxo-kO)-1-[(phenylamino)carbonyl]propyl]azo-kN1]-1,3-benzenedisulfonato(4-)]-,disodium (9CI); Cuprate(2-),[4-hydroxy-5-[[2-oxo-1-[(phenylamino)carbonyl]propyl]azo]-1,3-benzenedisulfonato(4-)]-,disodium; 1,3-Benzenedisulfonic acid,4-hydroxy-5-[[2-oxo-1-[(phenylamino)carbonyl]propyl]azo]-, copper complex