发明人刘建华,冯建国,钱学锋. "一种4-(二氟甲基)-2-羟基-6-甲氧基烟酸的合成方法" [P]. 中国发明专利, 专利号 CN 110602884 A, 授权公告日 2018-08-20.
发明人徐明华,刘建华,李文辉. "Method for the Synthesis of 4-(Difluoromethyl)-2-hydroxy-6-methoxynicotinic acid" [P]. 中国发明专利, 专利号 CN 114353190 B, 授权公告日 2024-08-17.
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