<unk>  is an antineoplastic agent that is FDA approved for the treatment of brain tumors, Hodgkin's disease. There is a Black Box Warning for this drug as shown here.  Common adverse reactions include leukopenia, myelosuppression, thrombocytopenia,optic atrophy, visual disturbance,nephrotoxicity,Pulmonary toxicity.
Lomustine
Bendamustine
Fotemustine
Estramustine
Carmustine 
Ifosfamide
Prednimustine
Semustine