ATTO 647
ATTO 647 属于红色光谱区域的新一代荧光标记物。 Characteristic features of the label are strong absorption, high 荧光量子产率, high photo-stability and good water solubility. ATTO 647 是一种zwitterionic dye with a net electrical charge of zero. The dye is stable at physiological pH-values and in buffers up to pH 8. However, it slowly degrades at higher pH. The dye is very 亲水性.
The fluorescence is excited most efficiently in the range 615 - 660 nm. A suitable excitation source for ATTO 647 is, next to the He:Ne laser (633nm), the 647 nm line of the Krypton-Ion laser or a diode-laser emitting at 650 nm.
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