The Boc- (tert-butoxycarbonyl) protective group can be removed using trifluoroacetic acid or other potent acids, resulting in the formation of a reactive hydrazide. This reactive hydrazide can subsequently couple with a variety of carbonyl groups to produce Cyanine5-labeled molecules.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.
