发明人李文辉,郭海燕,陈志强. "Method for the Synthesis of 4-Methyl-3-thioureidobenzoic acid" [P]. 中国发明专利, 专利号 CN 113095466 A, 授权公告日 2021-09-18.
发明人李文辉,郭海燕,林芳. "A Process for Preparing High-Purity 4-Methyl-3-thioureidobenzoic acid" [P]. 中国发明专利, 专利号 CN 109065165 A, 授权公告日 2018-01-28.
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