发明人朱建伟,郑宇鹏,韩伟. "Method for the Synthesis of 2-[(2,4-Dimethoxyphenyl)amino]nicotinic acid" [P]. 中国发明专利, 专利号 CN 113497053 B, 授权公告日 2022-02-13.
发明人高志强,罗永刚,郭海燕. "A Process for Preparing High-Purity 2-[(2,4-Dimethoxyphenyl)amino]nicotinic acid" [P]. 中国发明专利, 专利号 CN 114527399 B, 授权公告日 2015-03-16.
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