Fluorescein-5-maleimide ≥90% (by HPLC)

Supplier: ADIPOGEN CORP MS
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Synonyms: 5-Maleimidofluorescein

CDX-F0004-M500 CDX-F0004-M050
102987-926EA 2380.15 USD
102987-926 102987-924
Fluorescein-5-maleimide ≥90% (by HPLC)
Fluorescein-5-maleimide

Green fluorescent thiol-reactive dye (Ex/Em: 494/519nm) for bioconjugation, widely used as protein and peptide fluorescent labeling reagent, easily conjugating fluorescein. The reaction requires very mild condition and is highly specific.


The maleimide group reacts optimally with sulfhydryl groups on cysteine side chains at pH 7, forming a stable thioether bond. The compound can be used to label proteins for the detection of conformational changes, assembly of multisubunit complexes, and ligand-binding processes.

Formula: C₂₄H₁₃NO₇
MW: 427.37 g/mol
Storage Temperature: Freezer
MDL Number: MFCD00077345
CAS Number: 75350-46-8

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Specification Test Results

Source/Host Synthetic
Purity ≥90% (HPLC)
Identity Determined by 1H-NMR
Appearance Orange to brown solid
Solubility Soluble in DMF

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