Eosin-5-isothiocyanate amine-reactive fluorescent dye

Supplier: Biotium

90091
89139-684EA 224.47 USD
89139-684
Eosin-5-isothiocyanate amine-reactive fluorescent dye
Eosin-5-isothiocyanate

Eosin-5-isothiocyanate is a good photosensitizer and can be used to selectively label amines.


  • λEx/λ Em (pH9) = 521/544 nm
  • ε = 95,000
  • Orange red solid soluble in DMF or DMSO
  • Store at -20°C and protect from light


Eosin-5-isothiocyanate has a quantum yield of 0.57 for singlet oxygen generation, which makes it useful for photoconversion of electron-rich materials such as diaminobenzidine (DAB) or fluorescent dyes into highly electron-dense materials for high resolution electron microscopy studies. Additionally, eosin is a good fluorescence acceptor for fluorescein (FAM), dansyl and coumarin dyes in fluorescence resonance energy transfer (FRET).

Formula: C₂₁H₇Br₄NO₅S
Storage Temperature: Freezer
MDL Number: MFCD00082502
CAS Number: 60520-47-0

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