N,N-bis(PEG1-azide)-N-PEG2-acid CAS:2740019-20-7 is a branched biotin probe with an azide group and a methyl ester terminal group. The azide group undergoes click chemistry to conjugate alkyne bearing biomolecules. The terminal carboxylic acid can be used to react with primary and secondary amine bearing compounds.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.
