Amine-PEG-Amine (NH2-PEG-NH2) is a homobifunctional polyethylene glycol derivative with a primary amine group at both ends, it is a linear bifunctional PEG crosslinker, Has a reactive primary amine or NH2 group that reacts rapidly with activated carboxylic acids such as NHS esters to form stable amide bonds. It is sensitive to light and temperature. Use is prohibited and the material should always be kept at a low temperature in dry conditions.