Fluorescein-5-maleimide

Supplier: Anaspec Inc

Synonyms: 1-(3',6'-Dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthen]-5-yl)-1H-pyrrole-2,5-dioneN-(5-Fluoresceinyl)-maleimide1-(3',6'-Dihydroxy-3-oxo-3H-spiro[2-benzofuran-1,9'-xanthen]-5-yl)-1H-pyrrole-2,5-dione5-Maleimidofluorescein

AS-81405
103010-980EA 323 USD
103010-980
Fluorescein-5-maleimide
Fluorescein-5-maleimide

Maleimides are among the most frequently used reagents for thiol modification. In most proteins, the site of reaction is at cysteine residues that either are intrinsically present or result from reduction of cystines. Unlike iodoacetamides, maleimides do not react with histidines and methionines under physiological conditions. Fluorescein-5-maleimide is one of the most popular fluorescent dyes for thiol modifications of proteins.


  • Spectral properties: Abs/Em = 493/515 nm
  • Solvent system: DMF or DMSO
  • Storage Temperature: -20°C desiccated and protected from light
  • Shipping condition: Blue ice

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

Order Now

Learn more

About VWR

Avantor is a vertically integrated, global supplier of discovery-to-delivery solutions for...

Learn more About VWR