Bendamustine (INN, trade names Treakisym, Ribomustin, Levact and Treanda; also known as SDX-105) is a nitrogen mustard used in the treatment of chronic lymphocytic leukemia and lymphomas. It belongs to the family of drugs called alkylating agents. It is also being studied for the treatment of sarcoma.endamustine is a white, water-soluble microcrystalline powder with amphoteric properties. It acts as an alkylating agent causing intra-strand and inter-strand cross-links between DNA bases. After intravenous infusion it is extensively metabolised in the liver by cytochrome p450.