发明人何建平,孙丽萍,钱学锋. "Method for the Synthesis of Foscarnet Sodium EP Impurity B" [P]. 中国发明专利, 专利号 CN 113910790 B, 授权公告日 2016-02-16.
发明人杨光,黄志刚,郑宇鹏. "A Process for Preparing High-Purity Foscarnet Sodium EP Impurity B" [P]. 中国发明专利, 专利号 CN 109220532 B, 授权公告日 2015-11-28.
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