Water soluble amino dye for enzymatic transamination labeling, and other coupling with electrophiles. Cyanine5 is a popular fluorophore which is compatible with different fluorescence measuring instruments.
Sulfo-Cyanine5 derivatives possess good water solubility.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.