NH2-PEG-OH is widely used in bioconjugation and drug delivery systems due to its unique properties. The amine group (NH2) allows for covalent attachment to various molecules, such as proteins, peptides, or drugs, while the hydroxyl group (OH) provides additional functionalization opportunities. This chemical is particularly valuable in creating PEGylated therapeutics, where it enhances solubility, stability, and circulation time of drugs in the body. It is also employed in surface modification to improve biocompatibility of materials used in medical devices. Additionally, NH2-PEG-OH plays a role in the development of hydrogels and nanoparticles for targeted drug delivery and tissue engineering applications. Its versatility makes it a key component in advancing biomedical research and therapeutic innovations.