| http://www.w3.org/ns/prov#value | - Examples of such xanthene compounds are compounds such as fluorescein and derivatives thereof such as the halogenated xanthenes such as 2???,4???,5???,7???-tetrabromo-3,4,5,6-tetrachlorofluorescein (phloxin B), 2???,4???,5???,7???-tetraiodofluorescein (erythrosin, erythrosin B, or C.I. Acid Red 51), 2???,4???,5???,7???-tetraiodo-3,4,5,6-tetrachlorofluorescein (Rose Bengal), 2???,4???,5???,7???,3,4
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