发明人周伟,胡光,冯建国. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 110592386 A, 授权公告日 2021-02-26.
发明人马晓峰,郑宇鹏,孙丽萍. "Method for the Synthesis of 2-{[1-(4-Methylphenyl)-2,5-dioxopyrrolidin-3-yl]thio}nicotinic acid" [P]. 中国发明专利, 专利号 CN 108948414 A, 授权公告日 2022-12-19.
发明人黄志刚,林芳,郭海燕. "A Process for Preparing High-Purity 2-{[1-(4-Methylphenyl)-2,5-dioxopyrrolidin-3-yl]thio}nicotinic acid" [P]. 中国发明专利, 专利号 CN 109572254 A, 授权公告日 2023-05-02.
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