PT - JOURNAL ARTICLE AU - C Fenselau AU - J P Lehman AU - A Myles AU - J Brandt AU - G S Yost AU - O M Friedman AU - O M Colvin TI - Iminocyclophosphamide as a chemically reactive metabolite of cyclophosphamide. DP - 1982 Nov 01 TA - Drug Metabolism and Disposition PG - 636--640 VI - 10 IP - 6 4099 - http://dmd.aspetjournals.org/content/10/6/636.short 4100 - http://dmd.aspetjournals.org/content/10/6/636.full SO - Drug Metab Dispos1982 Nov 01; 10 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.