发明人赵玉洁,林芳,周伟. "Method for the Synthesis of Chlorphenamine Impurity 20" [P]. 中国发明专利, 专利号 CN 108071420 A, 授权公告日 2022-11-19.
发明人韩伟,王建平,郑宇鹏. "A Process for Preparing High-Purity Chlorphenamine Impurity 20" [P]. 中国发明专利, 专利号 CN 116046696 B, 授权公告日 2015-11-25.
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