4,5,6,7-tetrachloro-3',6'-dihydroxy-2',4',5',7'-tetraiodospiro[2-benzofuran-3,9'-xanthene]-1-one 4,5,6,7-tetrachloro-3',6'-dihydroxy-2',4',5',7'-tetraiodo-spiro[isobenzofuran-3,9'-xanthene]-1-one 4,5,6,7-tetrachloro-3',6'-dihydroxy-2',4',5',7'-tetraiodo-1-spiro[isobenzofuran-3,9'-xanthene]one 4,5,6,7-tetrachloro-3',6'-dihydroxy-2',4',5',7'-tetraiodo-spiro[2-benzofuran-3,9'-xanthene]-1-one 152-74-9 328960_ALDRICH Rose Bengal lactone 4,5,6,7-Tetrachloro-3',6'-dihydroxy-2',4',5',7'-tetraiodospiro(isobenzofuran-1(3H),9'(9H)-xanthen)-3-one Spiro(isobenzofuran-1(3H),9'(9H)-xanthen)-3-one, 4,5,6,7-tetrachloro-3',6'-dihydroxy-2',4',5',7'-tetraiodo- ST5409915 NCGC00166255-01