Synonyms: Xanthylium, 9-(2-carboxyphenyl)-3,6-bis(diethylamino)-, (4-(2-(4,5-dihydro-3-methyl-5-(oxo-kappaO)-1-phenyl-1H-pyrazol-4-yl)diazenyl-kappaN1)-3-(hydroxy-kappaO)-1-naphthalenesulfonato(3-))chromate(1-) (1:1);9-(2-Carboxyphenyl)-3,6-bis(diethylamino)xanthylium (4-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-3-hydroxynaphthalene-1-sulphonato(3-))chromate(1-);Xanthylium, 9-(2-carboxyphenyl)-3,6-bis(diethylamino)-, (4-((4,5-dihydro-3-methyl-5-(oxo-kappaO)-1-phenyl-1H-pyrazol-4-yl)azo-kappaN1)-3-(hydroxy-kappaO)-1-naphthalenesulfonato(3-))chromate(1-);N-[9-(2-carboxyphenyl)-6-(diethylamino)-3H-xanthen-3-ylidene]-N-ethylethanaminium chromium(2+) 4-[(E)-(3-methyl-5-oxido-1-phenyl-1H-pyrazol-4-yl)diazenyl]-3-oxidonaphthalene-1-sulfonate (1:1:1)