The molecule is a xanthene dye having two fluoro substituents at the 2- and 7-positions and a 2,4-dicarboxyphenyl group at the 9-position. It has a role as a fluorochrome and an epitope. It derives from a fluorescein.
4-(2,7-difluoro-3-hydroxy-6-oxoxanthen-9-yl)benzene-1,3-dicarboxylic acid