Primary amine is a versatile functional group for bioconjugation. It is reactive against activated carboxylic acid derivatives like pentafluorophenyl esters and acyl halogenides, other electrophiles like epoxides, Michael acceptors like acrylates. It can aminate carbonyl compounds like aldehydes and ketones in reductive conditions.
BDP 558/568 is a universal borondipyrromethene dye with the emission in orange/yellow part of the spectrum.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.