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发明人徐明华,郑宇鹏,罗永刚. "Method for the Synthesis of Levocabastine EP Impurity C" [P]. 中国发明专利, 专利号 CN 109291185 B, 授权公告日 2017-04-15.
发明人韩伟,刘建华,林芳. "A Process for Preparing High-Purity Levocabastine EP Impurity C" [P]. 中国发明专利, 专利号 CN 112802158 A, 授权公告日 2017-11-20.
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