<unk>  (INN) is an oxazaphosphorine (cyclophosphamide-like) alkylating agent under investigation as a chemotherapeutic. Several Phase I trials have been completed.
Mafosfamide
Ifosfamide
Vidarabine
Fludarabine 
Dihydroergocristine
Vincristine sulfate
Nelarabine
Clofarabine