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You are here:Home » Molecular Biology » MB-Fluorescent Labels » Fluorescein



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A fluorescent tracer used for many applications. It is used in ophthalmology as a tool in the diagnosis of corneal abrasions, corneal ulcers and herpetic corneal infections. It can attach to certain biologically active molecules, thus allowing biologists to target the fluorophore to specific proteins or structures within cells
Catalog #012134
FormRed Solid
Melting Point>300°C
CAS Number2321-07-5
Molecular FormulaC20H12O5
Molecular Weight332.31
Important NoteThis product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological. Toxicity and Hazards: All products should be handled by qualified personnel only, trained in laboratory procedures.
Alternate names3',6'-Dihydroxyspiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one; 3',6'-Fluorandiol; 3,6-Dihydroxyspiro[xanthene-9,3'-phthalide]; Resorcinolphthalein; 9-(o-Carboxyphenyl)-6-hydroxy-3-isoxanthenone; 3',6'-Dihydroxyfluoran; 2-(6-hydroxy-3-oxo-3H-xanthen-9-yl)

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