3-AP (Triapine) is primarily utilized in the field of medical research, particularly in the study of cancer treatment. It acts as a ribonucleotide reductase inhibitor, which plays a crucial role in DNA synthesis and repair. By inhibiting this enzyme, 3-AP can effectively slow down or halt the proliferation of cancer cells, making it a potential candidate for chemotherapy. It has been investigated for various cancers, including hematological malignancies such as leukemia and lymphoma. Additionally, it is being explored for its ability to enhance the efficacy of other anticancer drugs when used in combination therapies. Research is ongoing to better understand its mechanisms and optimize its use in clinical settings. Use under medical supervision is recommended due to potential severe side effects.