Far-red fluorescent Cy5 alkyne with absorption and emission spectra nearly identical to Alexa Fluor® 647, CF® 647 Dye or any other Cyanine5-based fluorescent dye, which reacts with azide via a copper-catalyzed click reaction (CuAAC) to form a stable Triazole, does not require high temperature. This far-red fluorescent probe is water-soluble and its fluorescence is pH-insensitive in the pH 4 to pH 10 range. Its excitation peak is well suited for 633 nm or 647 nm laser lines.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.
