发明人何建平,马晓峰,刘建华. "一种吡非尼酮杂质17的合成方法" [P]. 中国发明专利, 专利号 CN 114251648 A, 授权公告日 2023-12-16.
发明人郭海燕,钱学锋,冯建国. "Method for the Synthesis of Pirfenidone Impurity 17" [P]. 中国发明专利, 专利号 CN 108306378 B, 授权公告日 2015-09-10.
发明人徐明华,郑宇鹏,王建平. "A Process for Preparing High-Purity Pirfenidone Impurity 17" [P]. 中国发明专利, 专利号 CN 112009165 B, 授权公告日 2022-09-14.
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