ATTO 465 Biotin Fluorescent Label 5 mg

Optical properties

• λ _abs = 453 nm
• ε _max = 7.5×10⁴ M ^-1 cm ^-1
• λ _fl = 506 nm
• n _fl = 70 %
• τ _fl = 5.0 ns
• CF ₂₆₀ = ε ₂₆₀ /ε _max = 1.09
• CF ₂₈₀ = ε ₂₈₀ / ε _max = 0.48

ATTO 465 is a novel fluorescent label derived from the well-known dye Acriflavin. Characteristic features of the label are strong absorption, high fluorescence quantum yield, and high thermal and photo-stability. In aqueous solution the dye shows a surprisingly large Stokes-shift of 55 nm. The dye shows intense and long-lived phosphorescence in solid matrix, in particular at low temperatures. ATTO 465 is moderately hydrophilic. The fluorescence can be excited efficiently in the range 420 - 465 nm.