Eosin B is a form of eosin which is a dye compound. There is another form of eosin B dye and its chemical name is 4, 5-dibromo-2, 7dinitro- fluorescein or 4′,5′-dibromo-2′,7′-dinitro-3-oxo-3Hspiro[2-benzofuran-1,9′-xanthene]-3′,6′ diolate. This last form of eosin B is an organic laser dye.
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