Syonyms Name: D & C Red no. 27; 2,4,5,7-Tetrabromo-3,4,5,6-tetrachlorofluorescein; 2',4',5',7'-tetrabromo-4,5,6,7-tetrachloro-3',6'-dihydroxy-3H-spiro[2-benzofuran-1,9'-xanthen]-3-one; disodium 2',4',5',7'-tetrabromo-4,5,6,7-tetrachloro-3-oxo-3H-spiro[2-benzofuran-1,9'