Bio-Synthesis offers ATTO 465 fluorescent dye oligonucleotide labeling services. ATTO 465 is a fluorescent label derived from the well-known dye Acriflavin. ATTO 465 is moderately hydrophilic. Its fluorescence can be excited efficiently in the range 420-465 nm. 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. This dye can be use to replace LC480 Cyan 500.
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-20°C To -70°C Oligonucleotides are stable in solution at 4°C for up to 2 weeks. Properly reconstituted material stored at -20°C should be stable for at least 6 months. Dried DNA (when kept at -20°C) in a nuclease-free environment should be stable for years.