The molecule is a fluorescein compound having chloro substituents in the 4'- and 5'-positions, methoxy substituents in the 2'- and 7'-positions and a carboxy substituent at the 6-position. It has a role as a fluorochrome. It derives from a fluorescein.
4',5'-dichloro-3',6'-dihydroxy-2',7'-dimethoxy-1-oxospiro[2-benzofuran-3,9'-xanthene]-5-carboxylic acid