Catalog No. Size PriceQuantity
M8818-2 Solid 2 mg $90
M8818-10 Solid 10 mg $270


This product contains the pure 6-isomer of fluorescein.Fluorescein (FAM) is a bright fluorophore that has found an extremely wide application in life science research. The fluorophore is hydrophilic and its derivatives possess good solubility in aqueous buffers.

Product information

CAS Number: 92557-81-8

Molecular Weight: 473.39

Formula: C25H15NO9

Chemical Name: 2,5-dioxopyrrolidin-1-yl 3',6'-dihydroxy-3-oxo-3H-spiro[2-benzofuran-1,9'-xanthene]-6-carboxylate

Smiles: OC1C=C2OC3C=C(O)C=CC=3C3(OC(=O)C4=CC=C(C=C34)C(=O)ON3C(=O)CCC3=O)C2=CC=1


InChi: InChI=1S/C25H15NO9/c27-13-2-5-16-19(10-13)33-20-11-14(28)3-6-17(20)25(16)18-9-12(1-4-15(18)24(32)34-25)23(31)35-26-21(29)7-8-22(26)30/h1-6,9-11,27-28H,7-8H2

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200

Products are for research use only. Not for human use.

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