ButyrAldehyde-PEG-ButyrAldehyde(PEG-bis-Butyraldehyde, bALD-PEG-Bald), MW 3.4K is a linear PEG polymer containing two aldehyde groups.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.