RT Journal Article SR Electronic T1 Iminocyclophosphamide as a chemically reactive metabolite of cyclophosphamide. JF Drug Metabolism and Disposition JO Drug Metab Dispos FD American Society for Pharmacology and Experimental Therapeutics SP 636 OP 640 VO 10 IS 6 A1 Fenselau, C A1 Lehman, J P A1 Myles, A A1 Brandt, J A1 Yost, G S A1 Friedman, O M A1 Colvin, O M YR 1982 UL http://dmd.aspetjournals.org/content/10/6/636.abstract AB Iminocyclophosphamide has been identified among the metabolites produced by incubation of cyclophosphamide with cytochrome P-450 mono-oxygenase immobilized on beaded Sepharose. The reactive imine was trapped by addition of hydrogen cyanide, and the product, 4-cyanocyclophosphamide, was identified by comparison of its chromatographic and mass-spectral properties with those of a synthetic standard. Iminocyclophosphamide was also generated chemically from 4-hydroperoxycyclophosphamide and characterized both by addition of hydrogen cyanide and by reduction with sodium borodeuteride. The synthesis of authentic 4-cyanocyclophosphamide is also reported.