Catalogue number: F485250
Chemical name: Fluorescein
Synonyms: 3’,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)benzoic Acid; C.I. 45350:1; C.I. Solvent Yellow 94; D and C Yellow No. 7; D&C Yellow No. 7; Fluorescein Acid; Japan Yellow 201; Japan Yellow No. 201; NSC 667256; Solvent Yellow 94; Yellow Fluorescein;
CAS Number: 2321-07-5
Possible CAS #: NA
Molecular form.: C₂₀H₁₂O₅
Appearance: Brownish-Red Solid
Melting Point: >300°C
Mol. Weight: 332.31
Storage: Refrigerator
Solubility: DMSO (Slightly)
Stability: No Data Available
Category: Aromatics, Heterocycles, Fluorescent Labels & Indicators, Pharmaceuticals, Intermediates & Fine Chemicals,
Boiling Point: No Data Available
Applications: 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
Dangerous Goods Info: NA
References: Drees, B.L. et al.: J. Biol. Chem., 271, 32168 (1996); Can. Med. Assoc. J., 80, 997 (1959); Taki, M. et al.: Prot. Eng. Des. Select., 17, 119 (2004);
Peer Review Product Citations:

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Exact Weight Packaging ($75(USD) / Vial)
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