Spiro[isobenzofuran-1(3H),9′-[9H]xanthen]-3-one, 2′,4′,5′,7′-tetrabromo-4,5,6,7-tetrachloro-3′,6′-dihydroxy-, sodium salt (1:2)
D&C Red 28
Disodium 2',4',5',7'-tetrabromo-4,5,6,7-tetrachloro-3-oxo-3H-spiro[[2]benzofuran-1,9'-xanthene]-3',6'-bis(olate)