EOSIN-5-Maleimide

Eosin-5-maleimide is a good photosensitizer and can be used to selectively label thiols. It 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). </p> <ul> </p> <li> lamba;_Ex/ lamba;_Em (MeOH) = 524/545 nm</li> </p> <li> epsilon; = 100,000</li> </p> <li>Orange solid soluble in DMF or DMSO</li> </p> <li>Store at -20°C and protect from light</li> </p> <li>C₂₄H₉Br₄NO₇</li> </p> <li>MW: 742.95</li> </p> </ul> </p>