(2R,4S)-N,N-bis(2-chloroethyl)-4-hydroperoxy-2-oxo-1,3,2lambda5-oxazaphosphinan-2-amine
Perfosfamide is the active metabolite of the nitrogen mustard cyclophosphamide with potent antineoplastic and immunosuppressive properties. Perfosfamide alkylates DNA, thereby inhibiting DNA replication and RNA and protein synthesis. (NCI04)