<unk>  is a purine analog, and can be given both orally and intravenously.<unk>  inhibits DNA synthesis by interfering with ribonucleotide reductase and DNA polymerase. It is active against both dividing and resting cells. Being phosphorylated,<unk>  is ionized at physiologic pH and is effectually trapped in blood. This provides some level of specificity for blood cells, both cancerous and healthy.
Fludarabine
Clofarabine
Nelarabine
Cladribine
Cytarabine
Vincristine
Ifosfamide
Lenalidomide