Lenalidomide-5-aminomethyl hydrochloride is primarily utilized in the field of pharmaceutical research and development, particularly in the synthesis of novel therapeutic agents. Its application is significant in the study of immunomodulatory drugs, where it serves as a key intermediate in the production of compounds designed to modulate the immune system. This chemical is instrumental in the development of treatments for various cancers, including multiple myeloma and myelodysplastic syndromes. Additionally, it is explored for its potential in enhancing the efficacy of chemotherapy and reducing adverse effects, making it a valuable component in the advancement of cancer therapy.