Azido-dPEG7-amine is a heterobifunctional PEGylated linker.{52509} It contains a reactive NH2 end group, as well as an azide functional group for use in click chemistry reactions. Azido-dPEG7-amine has been used as a linker in the synthesis of bivalent mammalian target of rapamycin (mTOR) inhibitors.{52510}