Bio-Synthesis offers ATTO 647 fluorescent dye oligonucleotide labeling services. ATTO 647 is a fluorescent labels for the red spectral region. Characteristic features of the label are strong absorption, high fluorescence quantum yield, and high photostability with good water solubility. The fluorescence of ATTO 647 is excited most efficiently in the range 615- 660 nm, a suitable excitation source is the 647 nm line of the Krypton-Ion laser or a diode-laser emitting at 650 nm.
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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.