Non-activated sulfo-Cyanine5 carboxylic acid, water soluble dye. This dye is highly hydrophilic and water-soluble. Non-sulfonated analog is available.
The fluorophore is an equivalent of Cy5® carboxylic acid.
For labeling applications consider using pre-activated sulfo-Cy5 NHS ester
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.