Fluorescence Quenchers

ATTO-TEC offers a series of new quenching labels. They are designed to be used as efficient energy acceptors in FRET (Fluorescence Resonance Energy Transfer) applications.

ATTO-TEC fluorescence quenchers are available as NHS-ester and maleimide to be coupled to amino and mercapto groups of proteins etc. In addition conjugates of biotin, phalloidin and streptavidin are provided.

Their characteristic properties are:

  • strong absorption (high extinction coefficient)
  • high photo-stability


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