m-PEG2-Amino（Cat No.:I014049）is a monofunctional polyethylene glycol derivative composed of a two-unit PEG chain terminated with a primary amine group. The amine functionality enables versatile conjugation through amide bond formation, carbamate linkage, or other coupling strategies with activated carboxylic acids and related groups. The short PEG2 spacer enhances hydrophilicity, provides molecular flexibility, and minimizes steric hindrance, ensuring efficient bioconjugation. This compact reagent is commonly used in peptide chemistry, polymer modification, and drug discovery, supporting the construction of multifunctional biomolecules, targeted delivery systems, and advanced therapeutic or diagnostic platforms.