Axispharm offers you N-(m-PEG9)-N’-(propargyl-PEG8)-Cy5, a cyanine linker with excitation/emission maxima at 649/667 nm and an alkynyl group, which makes Click Chemistry enables the attachment of dark and photostable cyanine fluorophores to a wide variety of molecules.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.
