TCO-PEG3-amine is a click chemistry crosslinking reagent. It can be used to derivatize NHS activated esters through a stable amide bond or carboxyl groups in the presence of of activators (e.g. EDC, or HATU). TCO enable click chemistry with tetrazine. PEG spacer improves water solubility. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.