3-(Azido-PEG-amino)propanol is a molecule containing functional groups that have become increasingly important in pharmaceutical research and development. The molecule is a derivative of 3-amino-1-propanol, which has been modified with an azido group and a polyethylene glycol (PEG) spacer. The azido group provides a reactive handle for further chemical modifications, while the PEG spacer enhances solubility and biocompatibility. This molecule has found applications in drug delivery systems, bioconjugation, and proteomics research. The azido group enables the conjugation of 3-(Azido-PEG-amino)propanol to other biomolecules, such as proteins or peptides, allowing for targeted drug delivery. Additionally, the PEG spacer enhances the solubility and stability of the conjugates, making them suitable for in vivo applications.