Lenalidomide-PEG1-azide is primarily utilized in the field of bioconjugation and targeted drug delivery systems. Its structure allows it to act as a linker molecule, facilitating the attachment of lenalidomide, a potent immunomodulatory drug, to various biological molecules or nanoparticles. This enables precise delivery of the drug to specific cells or tissues, enhancing therapeutic efficacy while minimizing off-target effects. It is particularly valuable in cancer therapy, where it can be used to create antibody-drug conjugates (ADCs) or other targeted constructs to deliver lenalidomide directly to tumor cells. Additionally, the azide group in the molecule allows for click chemistry reactions, making it a versatile tool in chemical biology for creating complex molecular architectures. Its application extends to research in immunology and drug development, where it aids in studying cellular pathways and developing novel therapeutic strategies.