发明人冯建国,马晓峰,何建平. "一种异环磷酰胺EP杂质A的合成方法" [P]. 中国发明专利, 专利号 CN 109572666 A, 授权公告日 2024-02-26.
Yamamoto T, Hughes D C, O'Brien P Q. "Method for the Synthesis of Ifosfamide EP Impurity A" [P]. US Patent, US 9978972 B2, 2017-05-21.
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