The high purity Bromo-PEG2-methyl ester CAS:2468714-95-4 provided by Axispharm is a PEG derivative containing methyl ester and bromide. The methyl ester can be hydrolyzed under strong alkaline conditions. Bromide (Br) is a very good leaving group for nucleophilic substitution reactions. Products can be used for PROTAC synthesis.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.