Synonyms: Cuprate(1-),[5-[[1-[3-(aminosulfonyl)phenyl]-4,5-dihydro-3-methyl-5-(oxo-kO)-1H-pyrazol-4-yl]azo-kN1]-4-(hydroxy-kO)-1-naphthalenesulfonato(3-)]-,hydrogen (9CI); Cuprate(1-),[5-[[1-[3-(aminosulfonyl)phenyl]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]-4-hydroxy-1-naphthalenesulfonato(3-)]-,hydrogen; 1-Naphthalenesulfonic acid,4-[[1-[3-(aminosulfonyl)phenyl]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl]azo]-3-hydroxy-,copper complex