Aldophosphamide

Aldophosphamide is a tautomer of the main active metabolite of the alkylating antineoplastic agent cyclophosphamide - the 4-hydroxycyclophosphamide. Some of the aldophosphamide is then intracellularly hydrolyzed by the enzyme phosphatase to the two directly cytotoxically active metabolites - phosphoramide mustard and acrolein - in the metabolic activation pathway of the cyclophosphamide. But most of the aldophosphamide undergoes metabolic inactivation, catalyzed by another enzyme, ALDH, which gives rise to carboxycyclophosphamide.