Ifosfamide Impurity A

Ifosfamide Impurity A is a hydrolyzed degradation byproduct of the parent compound, arising from the cleavage of the cyclic oxazaphosphorine ring. It retains the phosphoryl and chloroethyl moieties but features an open-ring structure with a terminal hydroxyl group in place of the epoxide functionality. This impurity is structurally analogous to Ifosfamide’s active metabolite but lacks the epoxide’s alkylating capacity. It serves as a critical HPLC reference standard for quantifying hydrolytic degradation pathways in Ifosfamide formulations.