A family of spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one derivatives. These are used as dyes, as indicators for various metals, and as fluorescent labels in immunoassays.
Synonyms: 0 Tetraiodofluorescein Fluoresceins 1590-32-5
This is just here as a test because I lose it