Azido-PEG4-beta-D-galactose represents a versatile sugar PEG linker featuring a terminal azide and a β-D-galactose moiety connected via PEG4 units. The azide group enables click chemistry with azide-bearing molecules, while the PEG4 chain improves hydrophilicity and molecular flexibility. The galactose unit provides receptor-mediated targeting capabilities, particularly valuable in glycoconjugate synthesis, drug discovery, and targeted therapeutics. This linker is ideal for applications such as bioconjugation, ADCs, and PROTAC design, where hydrophilicity and biological specificity are essential.
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