APDye 800 is a conceptually new sterically shielded NIR cyanine heptamethine dye that is spectrally nearly identical to IRDye 800CW and DyLight 800. The dye contains two shielding PEG arms directly on both sides of the heptamethyl fluorochrome, preventing any undesired bimolecular association process, resulting in a significant increase in fluorescence brightness. Its excitation is ideal for imaging systems with the 800nm channel. In applications where the presence of copper is a concern, APDye 800 DBCO is an ideal replacement for copper requiring fluorescent alkynes. APDye 800 DBCO is a water-soluble NIR fluorescent probe for copper-free detection of azide-labeled biomolecules.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.