Methyltetrazine-PEG4-azide is a herterobifunctional click chemistry reagent containing a methyltetrazine and azide moiety. The azide group can participate in copper-catalyzed Click Chemistry reactions with reagents such as alkynes, DBCO and BCN to form triazole moieties. The hydrophilic PEG linker increases the water solubility of the compound in aqueous media. Methyltetrazine enable fast click reaction with TCO (trans-cycloctene)
