What are the physical and chemical properties of 2',4',5',7'-Tetrabromo-4,5,6,7-tetrachloro-3',6'-dihydroxy-3H-spiro[2-benzofuran-1,9'-xanthen]-3-one (CAS: 13473-26-2)?

2',4',5',7'-Tetrabromo-4,5,6,7-tetrachloro-3',6'-dihydroxy-3H-spiro[2-benzofuran-1,9'-xanthen]-3-one has a molecular weight of approximately 795.8 g/mol. It is a white crystalline solid with poor solubility in water but good solubility in organic solvents. It is highly reactive, especially towards nucleophiles and reducing agents. The compound is stable under normal conditions but can decompose at high temperatures or in the presence of strong reducing agents.