4-oxo Cyclophosphamide is an inactive metabolite of the alkylating agent cyclophosphamide .1,2It is formed from cyclophosphamide through a 4-hydroxycyclophosphamide intermediate by aldehyde dehydrogenases.2 1.Struck, R.F., Kirk, M.C., Mellett, L.B., et al.Urinary metabolites of the antitumor agent cyclophosphamideMol. Pharmacol.7(5)519-529(1971) 2.de Jonge, M.E., Huitema, A.D.R., Rodenhuis, S., et al.Clinical pharmacokinetics of cyclophosphamideClin. Pharmacokinet.44(11)1135-1164(2005)
Carboxyphosphamide is an inactive metabolite of the alkylating agent cyclophosphamide .1It is formed from cyclophosphamideviaoxidation of the intermediatemetabolite aldophosphamide by aldehyde dehydrogenase. 1.Manthey, C.L., and Sladek, N.E.Kinetic characterization of the catalysis of activated cyclophosphamide (4-hydroxycyclophosphamide/aldophosphamide) oxidation to carboxyphosphamide by mouse hepatic aldehyde dehydrogenasesBiochem. Pharmacol.37(14)2781-2790(1988)