发明人王建平,徐明华,唐晓军. "Method for the Synthesis of 1,1'-Bis(4-(ethoxycarbonyl)phenyl)-[4,4'-bipyridine]-1,1'-diiumchloride" [P]. 中国发明专利, 专利号 CN 112375550 B, 授权公告日 2022-05-20.
发明人何建平,胡光,林芳. "A Process for Preparing High-Purity 1,1'-Bis(4-(ethoxycarbonyl)phenyl)-[4,4'-bipyridine]-1,1'-diiumchloride" [P]. 中国发明专利, 专利号 CN 117243887 B, 授权公告日 2017-03-01.
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