- 4’,5′-Dichloro-3’,6′-dihydroxy-2’,7′-dimethoxy-3-oxo-3H-spiro[isobenzofuran-1,9′-xanthene]-5-carboxylic acid,95%, 1g
- 4’,5′-Dichloro-3’,6′-dihydroxy-2’,7′-dimethoxy-3-oxo-3H-spiro[isobenzofuran-1,9′-xanthene]-5-carboxylic acid,95%, 250mg